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Tennessee Water Well Driller — Requirements & Free Practice

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Geothermal Borehole Only Drilling License

Geothermal borehole only drilling, license category B named in the application fee table

Licensing authority: Tennessee Department of Environment and Conservation, Division of Water Resources; Board of Ground Water Management · Application information

New application after the expired license reissuance window

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Expired application
After the 12-month no-examination reissuance window in Rule 0400-45-09-.06(2)(i), Rule 0400-45-09-.06(2)(c) requires a new application for a valid license; satisfy the current initial-application requirements.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Geothermal borehole only drilling, license category B named in the application fee table
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Reissuance of an expired license within 12 months

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Expiration window
Submit the renewal application and fee within 12 months after expiration, meet continuing-education requirements and owe no additional money to the Department under Rule 0400-45-09-.06(2)(i).
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Geothermal borehole only drilling, license category B named in the application fee table
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Reissuance exam conflict
The 2025 statute requires the approved licensure test including the interview before issuance. Rule 0400-45-09-.06(2)(i) provides the following lower-ranked waiver: (i) If the application, renewal fee or requirements for continuing education are not received by the Director by the date of expiration, the license shall expire. Expired licenses may be reissued without examination or board appearance if the renewal fee and application are submitted within twelve (12) months of the date of expiration, all requirements for continuing education have been met and no additional monies are owed to the Department. The statutory examinations remain leaves, and the rule's waiver is an applicant condition.
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Initial licensure by examination, including accepted NGWA written exam substitutions

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Geothermal borehole only drilling, license category B named in the application fee table
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Licensure by reciprocity for an applicant currently licensed in the same category

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Geothermal borehole only drilling, license category B named in the application fee table
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Out of state license
Currently hold a license in good standing in the same category in another jurisdiction; that jurisdiction must grant reciprocal privileges to Tennessee licensees. A license or examination belonging to that other jurisdiction is an applicant condition, not a Tennessee route leaf.
Reciprocity interview conflict
Public Chapter 507, Section 2, effective July 1, 2025, requires the Board to administer the approved licensure test, including an interview, before issuance. The lower-ranked Rule 0400-45-09-.06(1)(e) states: (e) Reciprocity to drillers and installers licensed in other states will be granted by the Department provided the applicant makes a written request for reciprocity and the applicant meets the requirements of the written exam as required under paragraph (6) of Rule 0400-45-09-.05, the applicant is currently licensed in the state for the same category and in good standing in that state and reciprocal privileges have been granted by that state to a licensee in Tennessee. An oral interview will not be required. The interview is retained under the controlling statute, and the Board rule's stated exemption is disclosed here.
Reciprocity request
Make a written request for reciprocity under Rule 0400-45-09-.06(1)(e).
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Restoration after refusal to renew

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Geothermal borehole only drilling, license category B named in the application fee table
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Reexamination
Persons whose licenses have been revoked, refused renewal or suspended must retake and pass all applicable exams under Rule 0400-45-09-.05(6).
Restoration status
The Commissioner may impose just terms and conditions, with advice from the Board, under Rule 0400-45-09-.07(3). Do not perform driller duties or work under another licensee while non-renewed under paragraph (4).
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Annual renewal in good standing
No examination is required for this applicant pathway.
Application
File the prescribed renewal application and pay the annual renewal fee by July 31 under Rule 0400-45-09-.06(2).
Commissioner approval
The Commissioner approves annual renewal. Rule 0400-45-09-.06(2) defines renewal by application, annual fee and continuing-education credits rather than a new initial application.
Continuing education
Submit proof of five Board- or Director-approved credit hours completed in the preceding license year; first-year holders not previously licensed in any driller or installer category are exempt for their first renewal under Rule 0400-45-09-.06(1)(i).
Current license
Hold this license in good standing.
License category
Geothermal borehole only drilling, license category B named in the application fee table
Supervised operators
The current renewal instructions require applicable affidavits of supervision; operator cards expire if a new affidavit is not submitted.

Official no-examination sources

Effective from 2025-07-01.

Renewal with a requested continuing education extension
No examination is required for this applicant pathway.
Application
File the prescribed renewal application and pay the annual renewal fee by July 31 under Rule 0400-45-09-.06(2).
Commissioner approval
The Commissioner approves annual renewal. Rule 0400-45-09-.06(2) defines renewal by application, annual fee and continuing-education credits rather than a new initial application.
Continuing education
Submit proof of five Board- or Director-approved credit hours completed in the preceding license year; first-year holders not previously licensed in any driller or installer category are exempt for their first renewal under Rule 0400-45-09-.06(1)(i).
Continuing education extension
When an incapacitating illness or similar unavoidable event prevents completion of continuing education, make a written, documented request to the Board for an extension. The Board may impose appropriate renewal conditions under Rule 0400-45-09-.06(1)(j)8(iii).
Current license
Hold this license in good standing.
License category
Geothermal borehole only drilling, license category B named in the application fee table
Supervised operators
The current renewal instructions require applicable affidavits of supervision; operator cards expire if a new affidavit is not submitted.

Official no-examination sources

Effective from 2025-07-01.

Reinstatement after revocation

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Geothermal borehole only drilling, license category B named in the application fee table
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Reexamination
Persons whose licenses have been revoked, refused renewal or suspended must retake and pass all applicable exams under Rule 0400-45-09-.05(6).
Restoration status
After waiting at least one year from revocation, petition the Commissioner for a hearing for reinstatement under Rule 0400-45-09-.07(2).
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Restoration after suspension

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Geothermal borehole only drilling, license category B named in the application fee table
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Reexamination
Persons whose licenses have been revoked, refused renewal or suspended must retake and pass all applicable exams under Rule 0400-45-09-.05(6).
Restoration status
The Commissioner may impose just terms and conditions, with advice from the Board, under Rule 0400-45-09-.07(3). Do not perform driller duties or work under another licensee while suspended under paragraph (4).
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).

Well Closure License

Closing and abandoning wells

Licensing authority: Tennessee Department of Environment and Conservation, Division of Water Resources; Board of Ground Water Management · Application information

New application after the expired license reissuance window

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Expired application
After the 12-month no-examination reissuance window in Rule 0400-45-09-.06(2)(i), Rule 0400-45-09-.06(2)(c) requires a new application for a valid license; satisfy the current initial-application requirements.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Closing and abandoning wells
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Reissuance of an expired license within 12 months

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Expiration window
Submit the renewal application and fee within 12 months after expiration, meet continuing-education requirements and owe no additional money to the Department under Rule 0400-45-09-.06(2)(i).
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Closing and abandoning wells
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Reissuance exam conflict
The 2025 statute requires the approved licensure test including the interview before issuance. Rule 0400-45-09-.06(2)(i) provides the following lower-ranked waiver: (i) If the application, renewal fee or requirements for continuing education are not received by the Director by the date of expiration, the license shall expire. Expired licenses may be reissued without examination or board appearance if the renewal fee and application are submitted within twelve (12) months of the date of expiration, all requirements for continuing education have been met and no additional monies are owed to the Department. The statutory examinations remain leaves, and the rule's waiver is an applicant condition.
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Initial licensure by examination, including accepted NGWA written exam substitutions

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Closing and abandoning wells
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Licensure by reciprocity for an applicant currently licensed in the same category

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Closing and abandoning wells
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Out of state license
Currently hold a license in good standing in the same category in another jurisdiction; that jurisdiction must grant reciprocal privileges to Tennessee licensees. A license or examination belonging to that other jurisdiction is an applicant condition, not a Tennessee route leaf.
Reciprocity interview conflict
Public Chapter 507, Section 2, effective July 1, 2025, requires the Board to administer the approved licensure test, including an interview, before issuance. The lower-ranked Rule 0400-45-09-.06(1)(e) states: (e) Reciprocity to drillers and installers licensed in other states will be granted by the Department provided the applicant makes a written request for reciprocity and the applicant meets the requirements of the written exam as required under paragraph (6) of Rule 0400-45-09-.05, the applicant is currently licensed in the state for the same category and in good standing in that state and reciprocal privileges have been granted by that state to a licensee in Tennessee. An oral interview will not be required. The interview is retained under the controlling statute, and the Board rule's stated exemption is disclosed here.
Reciprocity request
Make a written request for reciprocity under Rule 0400-45-09-.06(1)(e).
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Restoration after refusal to renew

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Closing and abandoning wells
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Reexamination
Persons whose licenses have been revoked, refused renewal or suspended must retake and pass all applicable exams under Rule 0400-45-09-.05(6).
Restoration status
The Commissioner may impose just terms and conditions, with advice from the Board, under Rule 0400-45-09-.07(3). Do not perform driller duties or work under another licensee while non-renewed under paragraph (4).
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Annual renewal in good standing
No examination is required for this applicant pathway.
Application
File the prescribed renewal application and pay the annual renewal fee by July 31 under Rule 0400-45-09-.06(2).
Commissioner approval
The Commissioner approves annual renewal. Rule 0400-45-09-.06(2) defines renewal by application, annual fee and continuing-education credits rather than a new initial application.
Continuing education
Submit proof of five Board- or Director-approved credit hours completed in the preceding license year; first-year holders not previously licensed in any driller or installer category are exempt for their first renewal under Rule 0400-45-09-.06(1)(i).
Current license
Hold this license in good standing.
License category
Closing and abandoning wells
Supervised operators
The current renewal instructions require applicable affidavits of supervision; operator cards expire if a new affidavit is not submitted.

Official no-examination sources

Effective from 2025-07-01.

Renewal with a requested continuing education extension
No examination is required for this applicant pathway.
Application
File the prescribed renewal application and pay the annual renewal fee by July 31 under Rule 0400-45-09-.06(2).
Commissioner approval
The Commissioner approves annual renewal. Rule 0400-45-09-.06(2) defines renewal by application, annual fee and continuing-education credits rather than a new initial application.
Continuing education
Submit proof of five Board- or Director-approved credit hours completed in the preceding license year; first-year holders not previously licensed in any driller or installer category are exempt for their first renewal under Rule 0400-45-09-.06(1)(i).
Continuing education extension
When an incapacitating illness or similar unavoidable event prevents completion of continuing education, make a written, documented request to the Board for an extension. The Board may impose appropriate renewal conditions under Rule 0400-45-09-.06(1)(j)8(iii).
Current license
Hold this license in good standing.
License category
Closing and abandoning wells
Supervised operators
The current renewal instructions require applicable affidavits of supervision; operator cards expire if a new affidavit is not submitted.

Official no-examination sources

Effective from 2025-07-01.

Reinstatement after revocation

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Closing and abandoning wells
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Reexamination
Persons whose licenses have been revoked, refused renewal or suspended must retake and pass all applicable exams under Rule 0400-45-09-.05(6).
Restoration status
After waiting at least one year from revocation, petition the Commissioner for a hearing for reinstatement under Rule 0400-45-09-.07(2).
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Restoration after suspension

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Closing and abandoning wells
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Reexamination
Persons whose licenses have been revoked, refused renewal or suspended must retake and pass all applicable exams under Rule 0400-45-09-.05(6).
Restoration status
The Commissioner may impose just terms and conditions, with advice from the Board, under Rule 0400-45-09-.07(3). Do not perform driller duties or work under another licensee while suspended under paragraph (4).
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).

Geothermal Well Driller License

Drilling closed loop geothermal boreholes and installing closed loops

Licensing authority: Tennessee Department of Environment and Conservation, Division of Water Resources; Board of Ground Water Management · Application information

New application after the expired license reissuance window

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Expired application
After the 12-month no-examination reissuance window in Rule 0400-45-09-.06(2)(i), Rule 0400-45-09-.06(2)(c) requires a new application for a valid license; satisfy the current initial-application requirements.
Geothermal experience
Monitor-well or water-well drilling experience satisfies the geothermal-driller experience requirement under Rule 0400-45-09-.05(12). The interview exception for existing Tennessee water-well drillers who applied before January 1, 2004 does not cover new applications on the evaluation date.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Drilling closed loop geothermal boreholes and installing closed loops
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Reissuance of an expired license within 12 months

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Expiration window
Submit the renewal application and fee within 12 months after expiration, meet continuing-education requirements and owe no additional money to the Department under Rule 0400-45-09-.06(2)(i).
Geothermal experience
Monitor-well or water-well drilling experience satisfies the geothermal-driller experience requirement under Rule 0400-45-09-.05(12). The interview exception for existing Tennessee water-well drillers who applied before January 1, 2004 does not cover new applications on the evaluation date.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Drilling closed loop geothermal boreholes and installing closed loops
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Reissuance exam conflict
The 2025 statute requires the approved licensure test including the interview before issuance. Rule 0400-45-09-.06(2)(i) provides the following lower-ranked waiver: (i) If the application, renewal fee or requirements for continuing education are not received by the Director by the date of expiration, the license shall expire. Expired licenses may be reissued without examination or board appearance if the renewal fee and application are submitted within twelve (12) months of the date of expiration, all requirements for continuing education have been met and no additional monies are owed to the Department. The statutory examinations remain leaves, and the rule's waiver is an applicant condition.
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Initial licensure by examination, including accepted NGWA written exam substitutions

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Geothermal experience
Monitor-well or water-well drilling experience satisfies the geothermal-driller experience requirement under Rule 0400-45-09-.05(12). The interview exception for existing Tennessee water-well drillers who applied before January 1, 2004 does not cover new applications on the evaluation date.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Drilling closed loop geothermal boreholes and installing closed loops
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Licensure by reciprocity for an applicant currently licensed in the same category

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Geothermal experience
Monitor-well or water-well drilling experience satisfies the geothermal-driller experience requirement under Rule 0400-45-09-.05(12). The interview exception for existing Tennessee water-well drillers who applied before January 1, 2004 does not cover new applications on the evaluation date.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Drilling closed loop geothermal boreholes and installing closed loops
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Out of state license
Currently hold a license in good standing in the same category in another jurisdiction; that jurisdiction must grant reciprocal privileges to Tennessee licensees. A license or examination belonging to that other jurisdiction is an applicant condition, not a Tennessee route leaf.
Reciprocity interview conflict
Public Chapter 507, Section 2, effective July 1, 2025, requires the Board to administer the approved licensure test, including an interview, before issuance. The lower-ranked Rule 0400-45-09-.06(1)(e) states: (e) Reciprocity to drillers and installers licensed in other states will be granted by the Department provided the applicant makes a written request for reciprocity and the applicant meets the requirements of the written exam as required under paragraph (6) of Rule 0400-45-09-.05, the applicant is currently licensed in the state for the same category and in good standing in that state and reciprocal privileges have been granted by that state to a licensee in Tennessee. An oral interview will not be required. The interview is retained under the controlling statute, and the Board rule's stated exemption is disclosed here.
Reciprocity request
Make a written request for reciprocity under Rule 0400-45-09-.06(1)(e).
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Restoration after refusal to renew

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Geothermal experience
Monitor-well or water-well drilling experience satisfies the geothermal-driller experience requirement under Rule 0400-45-09-.05(12). The interview exception for existing Tennessee water-well drillers who applied before January 1, 2004 does not cover new applications on the evaluation date.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Drilling closed loop geothermal boreholes and installing closed loops
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Reexamination
Persons whose licenses have been revoked, refused renewal or suspended must retake and pass all applicable exams under Rule 0400-45-09-.05(6).
Restoration status
The Commissioner may impose just terms and conditions, with advice from the Board, under Rule 0400-45-09-.07(3). Do not perform driller duties or work under another licensee while non-renewed under paragraph (4).
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Annual renewal in good standing
No examination is required for this applicant pathway.
Application
File the prescribed renewal application and pay the annual renewal fee by July 31 under Rule 0400-45-09-.06(2).
Commissioner approval
The Commissioner approves annual renewal. Rule 0400-45-09-.06(2) defines renewal by application, annual fee and continuing-education credits rather than a new initial application.
Continuing education
Submit proof of five Board- or Director-approved credit hours completed in the preceding license year; first-year holders not previously licensed in any driller or installer category are exempt for their first renewal under Rule 0400-45-09-.06(1)(i).
Current license
Hold this license in good standing.
License category
Drilling closed loop geothermal boreholes and installing closed loops
Supervised operators
The current renewal instructions require applicable affidavits of supervision; operator cards expire if a new affidavit is not submitted.

Official no-examination sources

Effective from 2025-07-01.

Renewal with a requested continuing education extension
No examination is required for this applicant pathway.
Application
File the prescribed renewal application and pay the annual renewal fee by July 31 under Rule 0400-45-09-.06(2).
Commissioner approval
The Commissioner approves annual renewal. Rule 0400-45-09-.06(2) defines renewal by application, annual fee and continuing-education credits rather than a new initial application.
Continuing education
Submit proof of five Board- or Director-approved credit hours completed in the preceding license year; first-year holders not previously licensed in any driller or installer category are exempt for their first renewal under Rule 0400-45-09-.06(1)(i).
Continuing education extension
When an incapacitating illness or similar unavoidable event prevents completion of continuing education, make a written, documented request to the Board for an extension. The Board may impose appropriate renewal conditions under Rule 0400-45-09-.06(1)(j)8(iii).
Current license
Hold this license in good standing.
License category
Drilling closed loop geothermal boreholes and installing closed loops
Supervised operators
The current renewal instructions require applicable affidavits of supervision; operator cards expire if a new affidavit is not submitted.

Official no-examination sources

Effective from 2025-07-01.

Reinstatement after revocation

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Geothermal experience
Monitor-well or water-well drilling experience satisfies the geothermal-driller experience requirement under Rule 0400-45-09-.05(12). The interview exception for existing Tennessee water-well drillers who applied before January 1, 2004 does not cover new applications on the evaluation date.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Drilling closed loop geothermal boreholes and installing closed loops
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Reexamination
Persons whose licenses have been revoked, refused renewal or suspended must retake and pass all applicable exams under Rule 0400-45-09-.05(6).
Restoration status
After waiting at least one year from revocation, petition the Commissioner for a hearing for reinstatement under Rule 0400-45-09-.07(2).
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Restoration after suspension

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Geothermal experience
Monitor-well or water-well drilling experience satisfies the geothermal-driller experience requirement under Rule 0400-45-09-.05(12). The interview exception for existing Tennessee water-well drillers who applied before January 1, 2004 does not cover new applications on the evaluation date.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Drilling closed loop geothermal boreholes and installing closed loops
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Reexamination
Persons whose licenses have been revoked, refused renewal or suspended must retake and pass all applicable exams under Rule 0400-45-09-.05(6).
Restoration status
The Commissioner may impose just terms and conditions, with advice from the Board, under Rule 0400-45-09-.07(3). Do not perform driller duties or work under another licensee while suspended under paragraph (4).
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).

Monitor Well Driller License

Wells for monitoring ground water

Licensing authority: Tennessee Department of Environment and Conservation, Division of Water Resources; Board of Ground Water Management · Application information

New application after the expired license reissuance window

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Expired application
After the 12-month no-examination reissuance window in Rule 0400-45-09-.06(2)(i), Rule 0400-45-09-.06(2)(c) requires a new application for a valid license; satisfy the current initial-application requirements.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Wells for monitoring ground water
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Reissuance of an expired license within 12 months

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Expiration window
Submit the renewal application and fee within 12 months after expiration, meet continuing-education requirements and owe no additional money to the Department under Rule 0400-45-09-.06(2)(i).
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Wells for monitoring ground water
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Reissuance exam conflict
The 2025 statute requires the approved licensure test including the interview before issuance. Rule 0400-45-09-.06(2)(i) provides the following lower-ranked waiver: (i) If the application, renewal fee or requirements for continuing education are not received by the Director by the date of expiration, the license shall expire. Expired licenses may be reissued without examination or board appearance if the renewal fee and application are submitted within twelve (12) months of the date of expiration, all requirements for continuing education have been met and no additional monies are owed to the Department. The statutory examinations remain leaves, and the rule's waiver is an applicant condition.
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Initial licensure by examination, including accepted NGWA written exam substitutions

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Wells for monitoring ground water
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Licensure by reciprocity for an applicant currently licensed in the same category

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Wells for monitoring ground water
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Out of state license
Currently hold a license in good standing in the same category in another jurisdiction; that jurisdiction must grant reciprocal privileges to Tennessee licensees. A license or examination belonging to that other jurisdiction is an applicant condition, not a Tennessee route leaf.
Reciprocity interview conflict
Public Chapter 507, Section 2, effective July 1, 2025, requires the Board to administer the approved licensure test, including an interview, before issuance. The lower-ranked Rule 0400-45-09-.06(1)(e) states: (e) Reciprocity to drillers and installers licensed in other states will be granted by the Department provided the applicant makes a written request for reciprocity and the applicant meets the requirements of the written exam as required under paragraph (6) of Rule 0400-45-09-.05, the applicant is currently licensed in the state for the same category and in good standing in that state and reciprocal privileges have been granted by that state to a licensee in Tennessee. An oral interview will not be required. The interview is retained under the controlling statute, and the Board rule's stated exemption is disclosed here.
Reciprocity request
Make a written request for reciprocity under Rule 0400-45-09-.06(1)(e).
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Restoration after refusal to renew

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Wells for monitoring ground water
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Reexamination
Persons whose licenses have been revoked, refused renewal or suspended must retake and pass all applicable exams under Rule 0400-45-09-.05(6).
Restoration status
The Commissioner may impose just terms and conditions, with advice from the Board, under Rule 0400-45-09-.07(3). Do not perform driller duties or work under another licensee while non-renewed under paragraph (4).
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Annual renewal in good standing
No examination is required for this applicant pathway.
Application
File the prescribed renewal application and pay the annual renewal fee by July 31 under Rule 0400-45-09-.06(2).
Commissioner approval
The Commissioner approves annual renewal. Rule 0400-45-09-.06(2) defines renewal by application, annual fee and continuing-education credits rather than a new initial application.
Continuing education
Submit proof of five Board- or Director-approved credit hours completed in the preceding license year; first-year holders not previously licensed in any driller or installer category are exempt for their first renewal under Rule 0400-45-09-.06(1)(i).
Current license
Hold this license in good standing.
License category
Wells for monitoring ground water
Supervised operators
The current renewal instructions require applicable affidavits of supervision; operator cards expire if a new affidavit is not submitted.

Official no-examination sources

Effective from 2025-07-01.

Renewal with a requested continuing education extension
No examination is required for this applicant pathway.
Application
File the prescribed renewal application and pay the annual renewal fee by July 31 under Rule 0400-45-09-.06(2).
Commissioner approval
The Commissioner approves annual renewal. Rule 0400-45-09-.06(2) defines renewal by application, annual fee and continuing-education credits rather than a new initial application.
Continuing education
Submit proof of five Board- or Director-approved credit hours completed in the preceding license year; first-year holders not previously licensed in any driller or installer category are exempt for their first renewal under Rule 0400-45-09-.06(1)(i).
Continuing education extension
When an incapacitating illness or similar unavoidable event prevents completion of continuing education, make a written, documented request to the Board for an extension. The Board may impose appropriate renewal conditions under Rule 0400-45-09-.06(1)(j)8(iii).
Current license
Hold this license in good standing.
License category
Wells for monitoring ground water
Supervised operators
The current renewal instructions require applicable affidavits of supervision; operator cards expire if a new affidavit is not submitted.

Official no-examination sources

Effective from 2025-07-01.

Reinstatement after revocation

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Wells for monitoring ground water
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Reexamination
Persons whose licenses have been revoked, refused renewal or suspended must retake and pass all applicable exams under Rule 0400-45-09-.05(6).
Restoration status
After waiting at least one year from revocation, petition the Commissioner for a hearing for reinstatement under Rule 0400-45-09-.07(2).
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Restoration after suspension

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Wells for monitoring ground water
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Reexamination
Persons whose licenses have been revoked, refused renewal or suspended must retake and pass all applicable exams under Rule 0400-45-09-.05(6).
Restoration status
The Commissioner may impose just terms and conditions, with advice from the Board, under Rule 0400-45-09-.07(3). Do not perform driller duties or work under another licensee while suspended under paragraph (4).
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).

Restrictive Driller License

A driller license issued subject to limited conditions set by the Commissioner, including well closure operations only

Licensing authority: Tennessee Department of Environment and Conservation, Division of Water Resources; Board of Ground Water Management · Application information

New application after the expired license reissuance window

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Expired application
After the 12-month no-examination reissuance window in Rule 0400-45-09-.06(2)(i), Rule 0400-45-09-.06(2)(c) requires a new application for a valid license; satisfy the current initial-application requirements.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
A driller license issued subject to limited conditions set by the Commissioner, including well closure operations only
License restrictions
The Commissioner or designee may issue a restrictive license and fixes its limited operating conditions under Rule 0400-45-09-.06(1); the rule does not establish a separate examination exemption.
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Reissuance of an expired license within 12 months

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Expiration window
Submit the renewal application and fee within 12 months after expiration, meet continuing-education requirements and owe no additional money to the Department under Rule 0400-45-09-.06(2)(i).
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
A driller license issued subject to limited conditions set by the Commissioner, including well closure operations only
License restrictions
The Commissioner or designee may issue a restrictive license and fixes its limited operating conditions under Rule 0400-45-09-.06(1); the rule does not establish a separate examination exemption.
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Reissuance exam conflict
The 2025 statute requires the approved licensure test including the interview before issuance. Rule 0400-45-09-.06(2)(i) provides the following lower-ranked waiver: (i) If the application, renewal fee or requirements for continuing education are not received by the Director by the date of expiration, the license shall expire. Expired licenses may be reissued without examination or board appearance if the renewal fee and application are submitted within twelve (12) months of the date of expiration, all requirements for continuing education have been met and no additional monies are owed to the Department. The statutory examinations remain leaves, and the rule's waiver is an applicant condition.
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Initial licensure by examination, including accepted NGWA written exam substitutions

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
A driller license issued subject to limited conditions set by the Commissioner, including well closure operations only
License restrictions
The Commissioner or designee may issue a restrictive license and fixes its limited operating conditions under Rule 0400-45-09-.06(1); the rule does not establish a separate examination exemption.
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Licensure by reciprocity for an applicant currently licensed in the same category

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
A driller license issued subject to limited conditions set by the Commissioner, including well closure operations only
License restrictions
The Commissioner or designee may issue a restrictive license and fixes its limited operating conditions under Rule 0400-45-09-.06(1); the rule does not establish a separate examination exemption.
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Out of state license
Currently hold a license in good standing in the same category in another jurisdiction; that jurisdiction must grant reciprocal privileges to Tennessee licensees. A license or examination belonging to that other jurisdiction is an applicant condition, not a Tennessee route leaf.
Reciprocity interview conflict
Public Chapter 507, Section 2, effective July 1, 2025, requires the Board to administer the approved licensure test, including an interview, before issuance. The lower-ranked Rule 0400-45-09-.06(1)(e) states: (e) Reciprocity to drillers and installers licensed in other states will be granted by the Department provided the applicant makes a written request for reciprocity and the applicant meets the requirements of the written exam as required under paragraph (6) of Rule 0400-45-09-.05, the applicant is currently licensed in the state for the same category and in good standing in that state and reciprocal privileges have been granted by that state to a licensee in Tennessee. An oral interview will not be required. The interview is retained under the controlling statute, and the Board rule's stated exemption is disclosed here.
Reciprocity request
Make a written request for reciprocity under Rule 0400-45-09-.06(1)(e).
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Restoration after refusal to renew

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
A driller license issued subject to limited conditions set by the Commissioner, including well closure operations only
License restrictions
The Commissioner or designee may issue a restrictive license and fixes its limited operating conditions under Rule 0400-45-09-.06(1); the rule does not establish a separate examination exemption.
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Reexamination
Persons whose licenses have been revoked, refused renewal or suspended must retake and pass all applicable exams under Rule 0400-45-09-.05(6).
Restoration status
The Commissioner may impose just terms and conditions, with advice from the Board, under Rule 0400-45-09-.07(3). Do not perform driller duties or work under another licensee while non-renewed under paragraph (4).
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Annual renewal in good standing
No examination is required for this applicant pathway.
Application
File the prescribed renewal application and pay the annual renewal fee by July 31 under Rule 0400-45-09-.06(2).
Commissioner approval
The Commissioner approves annual renewal. Rule 0400-45-09-.06(2) defines renewal by application, annual fee and continuing-education credits rather than a new initial application.
Continuing education
Submit proof of five Board- or Director-approved credit hours completed in the preceding license year; first-year holders not previously licensed in any driller or installer category are exempt for their first renewal under Rule 0400-45-09-.06(1)(i).
Current license
Hold this license in good standing.
License category
A driller license issued subject to limited conditions set by the Commissioner, including well closure operations only
Supervised operators
The current renewal instructions require applicable affidavits of supervision; operator cards expire if a new affidavit is not submitted.

Official no-examination sources

Effective from 2025-07-01.

Renewal with a requested continuing education extension
No examination is required for this applicant pathway.
Application
File the prescribed renewal application and pay the annual renewal fee by July 31 under Rule 0400-45-09-.06(2).
Commissioner approval
The Commissioner approves annual renewal. Rule 0400-45-09-.06(2) defines renewal by application, annual fee and continuing-education credits rather than a new initial application.
Continuing education
Submit proof of five Board- or Director-approved credit hours completed in the preceding license year; first-year holders not previously licensed in any driller or installer category are exempt for their first renewal under Rule 0400-45-09-.06(1)(i).
Continuing education extension
When an incapacitating illness or similar unavoidable event prevents completion of continuing education, make a written, documented request to the Board for an extension. The Board may impose appropriate renewal conditions under Rule 0400-45-09-.06(1)(j)8(iii).
Current license
Hold this license in good standing.
License category
A driller license issued subject to limited conditions set by the Commissioner, including well closure operations only
Supervised operators
The current renewal instructions require applicable affidavits of supervision; operator cards expire if a new affidavit is not submitted.

Official no-examination sources

Effective from 2025-07-01.

Reinstatement after revocation

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
A driller license issued subject to limited conditions set by the Commissioner, including well closure operations only
License restrictions
The Commissioner or designee may issue a restrictive license and fixes its limited operating conditions under Rule 0400-45-09-.06(1); the rule does not establish a separate examination exemption.
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Reexamination
Persons whose licenses have been revoked, refused renewal or suspended must retake and pass all applicable exams under Rule 0400-45-09-.05(6).
Restoration status
After waiting at least one year from revocation, petition the Commissioner for a hearing for reinstatement under Rule 0400-45-09-.07(2).
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Restoration after suspension

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
A driller license issued subject to limited conditions set by the Commissioner, including well closure operations only
License restrictions
The Commissioner or designee may issue a restrictive license and fixes its limited operating conditions under Rule 0400-45-09-.06(1); the rule does not establish a separate examination exemption.
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Reexamination
Persons whose licenses have been revoked, refused renewal or suspended must retake and pass all applicable exams under Rule 0400-45-09-.05(6).
Restoration status
The Commissioner may impose just terms and conditions, with advice from the Board, under Rule 0400-45-09-.07(3). Do not perform driller duties or work under another licensee while suspended under paragraph (4).
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).

Water Well Driller License

Water wells for the production of water

Licensing authority: Tennessee Department of Environment and Conservation, Division of Water Resources; Board of Ground Water Management · Application information

New application after the expired license reissuance window

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Expired application
After the 12-month no-examination reissuance window in Rule 0400-45-09-.06(2)(i), Rule 0400-45-09-.06(2)(c) requires a new application for a valid license; satisfy the current initial-application requirements.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Water wells for the production of water
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Reissuance of an expired license within 12 months

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Expiration window
Submit the renewal application and fee within 12 months after expiration, meet continuing-education requirements and owe no additional money to the Department under Rule 0400-45-09-.06(2)(i).
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Water wells for the production of water
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Reissuance exam conflict
The 2025 statute requires the approved licensure test including the interview before issuance. Rule 0400-45-09-.06(2)(i) provides the following lower-ranked waiver: (i) If the application, renewal fee or requirements for continuing education are not received by the Director by the date of expiration, the license shall expire. Expired licenses may be reissued without examination or board appearance if the renewal fee and application are submitted within twelve (12) months of the date of expiration, all requirements for continuing education have been met and no additional monies are owed to the Department. The statutory examinations remain leaves, and the rule's waiver is an applicant condition.
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Initial licensure by examination, including accepted NGWA written exam substitutions

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Water wells for the production of water
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Licensure by reciprocity for an applicant currently licensed in the same category

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Water wells for the production of water
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Out of state license
Currently hold a license in good standing in the same category in another jurisdiction; that jurisdiction must grant reciprocal privileges to Tennessee licensees. A license or examination belonging to that other jurisdiction is an applicant condition, not a Tennessee route leaf.
Reciprocity interview conflict
Public Chapter 507, Section 2, effective July 1, 2025, requires the Board to administer the approved licensure test, including an interview, before issuance. The lower-ranked Rule 0400-45-09-.06(1)(e) states: (e) Reciprocity to drillers and installers licensed in other states will be granted by the Department provided the applicant makes a written request for reciprocity and the applicant meets the requirements of the written exam as required under paragraph (6) of Rule 0400-45-09-.05, the applicant is currently licensed in the state for the same category and in good standing in that state and reciprocal privileges have been granted by that state to a licensee in Tennessee. An oral interview will not be required. The interview is retained under the controlling statute, and the Board rule's stated exemption is disclosed here.
Reciprocity request
Make a written request for reciprocity under Rule 0400-45-09-.06(1)(e).
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Restoration after refusal to renew

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Water wells for the production of water
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Reexamination
Persons whose licenses have been revoked, refused renewal or suspended must retake and pass all applicable exams under Rule 0400-45-09-.05(6).
Restoration status
The Commissioner may impose just terms and conditions, with advice from the Board, under Rule 0400-45-09-.07(3). Do not perform driller duties or work under another licensee while non-renewed under paragraph (4).
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Annual renewal in good standing
No examination is required for this applicant pathway.
Application
File the prescribed renewal application and pay the annual renewal fee by July 31 under Rule 0400-45-09-.06(2).
Commissioner approval
The Commissioner approves annual renewal. Rule 0400-45-09-.06(2) defines renewal by application, annual fee and continuing-education credits rather than a new initial application.
Continuing education
Submit proof of five Board- or Director-approved credit hours completed in the preceding license year; first-year holders not previously licensed in any driller or installer category are exempt for their first renewal under Rule 0400-45-09-.06(1)(i).
Current license
Hold this license in good standing.
License category
Water wells for the production of water
Supervised operators
The current renewal instructions require applicable affidavits of supervision; operator cards expire if a new affidavit is not submitted.

Official no-examination sources

Effective from 2025-07-01.

Renewal with a requested continuing education extension
No examination is required for this applicant pathway.
Application
File the prescribed renewal application and pay the annual renewal fee by July 31 under Rule 0400-45-09-.06(2).
Commissioner approval
The Commissioner approves annual renewal. Rule 0400-45-09-.06(2) defines renewal by application, annual fee and continuing-education credits rather than a new initial application.
Continuing education
Submit proof of five Board- or Director-approved credit hours completed in the preceding license year; first-year holders not previously licensed in any driller or installer category are exempt for their first renewal under Rule 0400-45-09-.06(1)(i).
Continuing education extension
When an incapacitating illness or similar unavoidable event prevents completion of continuing education, make a written, documented request to the Board for an extension. The Board may impose appropriate renewal conditions under Rule 0400-45-09-.06(1)(j)8(iii).
Current license
Hold this license in good standing.
License category
Water wells for the production of water
Supervised operators
The current renewal instructions require applicable affidavits of supervision; operator cards expire if a new affidavit is not submitted.

Official no-examination sources

Effective from 2025-07-01.

Reinstatement after revocation

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Water wells for the production of water
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Reexamination
Persons whose licenses have been revoked, refused renewal or suspended must retake and pass all applicable exams under Rule 0400-45-09-.05(6).
Restoration status
After waiting at least one year from revocation, petition the Commissioner for a hearing for reinstatement under Rule 0400-45-09-.07(2).
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).
Restoration after suspension

All of the following:

Application
Submit a complete, signed application on the prescribed form to the Director with the required fee under Rule 0400-45-09-.04(1)-(2). The current TDEC application page directs submission to Water.Well@tn.gov.
Commissioner approval
The Board recommends licensure after the examinations and interview, and the Commissioner or designee approves issuance under Rules 0400-45-09-.05(10) and -.06(1).
Education
Complete grade 10 or submit equivalent achievement through approved short courses or written examinations; up to four additional years of full-time employment may substitute for equal education years under Rule 0400-45-09-.02(3). Educational-equivalency examinations are applicant qualifications, not licensing-exam leaves.
Experience
Have at least two years of experience, before applying, in the occupation for which the license is sought under Rule 0400-45-09-.02(2).
Experience proof
Under Rule 0400-45-09-.03, provide either the required list of ten wells spanning at least two years, including owner, location, use, construction features, completion date, work and approximate cost, or occupational licenses/certificates covering two years in the occupation.
Interview passing vote
Answers to the Board interview questions must receive passing votes from a majority of the quorum present under Rule 0400-45-09-.05(9).
License category
Water wells for the production of water
License term
Licenses expire July 31 following issuance, are valid for no more than one year, and are issued to individuals and are not transferable.
Minimum age
Be at least 18 years of age under Rule 0400-45-09-.02(1).
Ngwa score window
Provide written documentation that each substituted NGWA examination was passed within the 12 months before receipt of the Tennessee application, or that NGWA certification has been maintained after passing the written examinations for the specific practice sought, under the policy dated February 8, 2022.
Ngwa substitution
Policy DWR-WGW-P-1 accepts passing NGWA general and/or specialty written exams in place of the corresponding Tennessee written exams. The alternatives are written-exam substitutions, and do not waive the interview. A specialty must be accepted for the specific practice for which Tennessee licensure is sought.
Reexamination
Persons whose licenses have been revoked, refused renewal or suspended must retake and pass all applicable exams under Rule 0400-45-09-.05(6).
Restoration status
The Commissioner may impose just terms and conditions, with advice from the Board, under Rule 0400-45-09-.07(3). Do not perform driller duties or work under another licensee while suspended under paragraph (4).
Specialty assignment
Rule 0400-45-09-.05(3) requires one or more Board-approved specialty examinations appropriate to the occupation sought. The anyOf node preserves the named driller specialties; the Board determines the appropriate category or categories and may require additional unnamed specialties. An examination for unrelated work does not establish competence for the requested license.
Written passing grade
Pass the general examination and each required specialty category with at least 70 percent under Rule 0400-45-09-.05(6).

Air rotary drilling

Provider
Tennessee Board of Ground Water Management
Format
Written examination
Passing score
70 percent
Examination outline
  • Air rotary drilling
Examination sources

Cable tool drilling

Provider
Tennessee Board of Ground Water Management
Format
Written examination
Passing score
70 percent
Examination outline
  • Cable tool drilling
Examination sources

Well closure and abandonment

Provider
Tennessee Board of Ground Water Management
Format
Written examination
Passing score
70 percent
Examination outline
  • Well closure and abandonment
Examination sources

General Examination

Provider
Tennessee Board of Ground Water Management
Format
Written examination
Passing score
70 percent
Practice scope

The authority has not published an examination outline; the practice questions follow the scope of the existing question bank.

  • Licensure, Scope, Supervision, and Enforcement
    • License scope, supervision, notifications, and enforcement
  • Notice, Reporting, and Records
    • Notices of intent, completion reports, and retained records
  • Well Siting and Contamination Separation
    • Flood protection, property clearances, and contamination setbacks
  • Groundwater Sources and Drilling Fluids
    • Aquifer protection, source depth, process water, and drilling fluids
  • Casing and Well Screens
    • Casing selection, installation, dimensions, and screen construction
  • Backfilling, Grouting, and Gravel Packs
    • Approved sealing materials, placement methods, and filter packs
  • Well Development and Wellhead Completion
    • Development, fracturing, caps, drainage, and pitless adapters
  • Water Well Disinfection
    • Disinfectant dosage, application, contact time, and flushing
  • Repair and Well Identification
    • Repair materials, liner casing, registration tags, and identification
  • Well Abandonment
    • Closure preparation, plugging materials, seals, exceptions, and reports
Examination sources

Geothermal well drilling for closed loop geothermal boreholes

Provider
Tennessee Board of Ground Water Management
Format
Written examination
Passing score
70 percent
Examination outline
  • Geothermal well drilling for closed loop geothermal boreholes
Examination sources

Board of Ground Water Management Interview

Provider
Tennessee Board of Ground Water Management
Format
Oral interview
Passing score
Passing votes from a majority of the quorum present, based on answers to interview questions
Examination outline
  • Where and when the applicant’s experience was obtained
  • Types of equipment used by the applicant
  • The applicant’s level of responsibility
  • Familiarity of the applicant with addressing problems
    • Construction techniques used in each type of well drilled for each license applied for
    • Operation of drilling equipment used in drilling wells or boreholes
    • Installation techniques and principles of operation for pumps and or water treatment devices
  • Knowledge of state well construction standards
  • Responsibilities of licensees to the well owner and the department
Examination sources

Monitor well

Provider
Tennessee Board of Ground Water Management
Format
Written examination
Passing score
70 percent
Examination outline
  • Monitor well
Examination sources

Mud rotary drilling

Provider
Tennessee Board of Ground Water Management
Format
Written examination
Passing score
70 percent
Examination outline
  • Mud rotary drilling
Examination sources

Reverse Circulation

Provider
Tennessee Board of Ground Water Management
Format
Written examination
Passing score
70 percent
Examination outline
  • Reverse Circulation
Examination sources

Exam C/D: Air Rotary Drilling

Provider
National Ground Water Association (NGWA); administered by PSI Services at PSI test centers
Format
Computer-based, closed-book examination taken at a PSI test center; pass/fail status on screen at completion, with a diagnostic score report by section for candidates who do not pass
Exam questions
50 questions
Time limit
1 hour
Passing score
70% (minimum passing score)
Exam fee
$75 per exam
Examination outline
  • Mobilize for the Site (6 of 50 items)
  • Construct Water Well (34 of 50 items)
  • Develop Wells (7 of 50 items)
  • Decommission Wells (2 of 50 items)
  • Demobilize the Site (1 of 50 items)
Examination sources

Exam M: Augering and Monitoring

Provider
National Ground Water Association (NGWA); administered by PSI Services at PSI test centers
Format
Computer-based, closed-book examination taken at a PSI test center; pass/fail status on screen at completion, with a diagnostic score report by section for candidates who do not pass
Exam questions
75 questions
Time limit
1 hour
Passing score
70% (minimum passing score)
Exam fee
$75 per exam
Examination outline
  • Mobilize for the Site (18 of 75 items)
  • Construct Water Well (43 of 75 items)
  • Rehabilitate Wells (3 of 75 items)
  • Develop Wells (8 of 75 items)
  • Demobilize the Site (3 of 75 items)
Examination sources

Exam A/B: Cable Tool Drilling

Provider
National Ground Water Association (NGWA); administered by PSI Services at PSI test centers
Format
Computer-based, closed-book examination taken at a PSI test center; pass/fail status on screen at completion, with a diagnostic score report by section for candidates who do not pass
Exam questions
50 questions
Time limit
1 hour
Passing score
70% (minimum passing score)
Exam fee
$75 per exam
Examination outline
  • Mobilize for the Site (3 of 50 items)
  • Construct Water Well (30 of 50 items)
  • Rehabilitate Wells (4 of 50 items)
  • Develop Wells (7 of 50 items)
  • Decommission Wells (3 of 50 items)
  • Demobilize the Site (3 of 50 items)
Examination sources

NGWA General Drilling Exam

Provider
National Ground Water Association (NGWA); administered by PSI Services at PSI test centers
Format
Computer-based, closed-book examination taken at a PSI test center; pass/fail status on screen at completion, with a diagnostic score report by section for candidates who do not pass
Exam questions
50 questions
Time limit
1 hour
Passing score
70% (minimum passing score)
Exam fee
$75 per exam
Examination outline
  • Mobilize for the Site (10 of 50 items)
  • Construct Water Well (16 of 50 items)
  • Rehabilitate Wells (5 of 50 items)
  • Develop Wells (11 of 50 items)
  • Decommission Wells (3 of 50 items)
  • Demobilize the Site (5 of 50 items)
Examination sources

Exam H: Jetting and Driving Wells

Provider
National Ground Water Association (NGWA); administered by PSI Services at PSI test centers
Format
Computer-based, closed-book examination taken at a PSI test center; pass/fail status on screen at completion, with a diagnostic score report by section for candidates who do not pass
Exam questions
50 questions
Time limit
1 hour
Passing score
70% (minimum passing score)
Exam fee
$75 per exam
Examination outline
  • Jetting and Driving Wells (50 of 50 items)
Examination sources

Exam E/F: Mud Rotary Drilling

Provider
National Ground Water Association (NGWA); administered by PSI Services at PSI test centers
Format
Computer-based, closed-book examination taken at a PSI test center; pass/fail status on screen at completion, with a diagnostic score report by section for candidates who do not pass
Exam questions
50 questions
Time limit
1 hour
Passing score
70% (minimum passing score)
Exam fee
$75 per exam
Examination outline
  • Mobilize for the Site (9 of 50 items)
  • Construct Water Well (18 of 50 items)
  • Prepare/Manage Drilling Fluids (17 of 50 items)
  • Develop Wells (5 of 50 items)
  • Demobilize the Site (1 of 50 items)
Examination sources

Exam G: Reverse Circulation Drilling

Provider
National Ground Water Association (NGWA); administered by PSI Services at PSI test centers
Format
Computer-based, closed-book examination taken at a PSI test center; pass/fail status on screen at completion, with a diagnostic score report by section for candidates who do not pass
Exam questions
50 questions
Time limit
1 hour
Passing score
70% (minimum passing score)
Exam fee
$75 per exam
Examination outline
  • Reverse Circulation Drilling (50 of 50 items)
Examination sources