Water Well Contractor Test — Information & Free Practice
US-MO · Examination information
60 free questions · Answer explanations · No signup required
Water Well Contractor Test
- Provider
- Missouri Department of Natural Resources, Well Installation Section
- Format
- Open-book online for restricted contractors and apprentices; closed-book in person for non-restricted contractors.
- Passing score
- At least 70 percent.
- Exam fee
- $50 per test for non-restricted testing; DNR states a $50 combined testing fee for restricted and apprentice online tests.
Practice scope
The authority has not published an examination outline; the practice questions follow the scope of the existing question bank.
Well Siting and Groundwater Protection
- Location, drainage, casing height, and contamination setbacks
- Groundwater safeguards during construction and repair
Water Well Construction
- Casing materials, joints, installation, and boreholes
- Grout materials, cure times, and placement methods
- Multifamily, high-yield, public, and oil-or-gas-zone wells
Wellhead Completion, Disinfection, and Liners
- Wellhead protection and disinfection
- Liner materials, placement, packers, and seals
Missouri Drilling Areas
- Construction and contamination controls in Drilling Areas 1 through 13
Water Well Plugging
- Responsibility, preparation, materials, and plugging methods
Examination sources
- 10 CSR 23-2: Fee Structure, Certification, and Registration
10 CSR 23-2.010(1)(H)2, named examination and individual fee, page 3
- RSMo section 256.613: Written examinations
section 256.613, complete written examination scope statement
- Well and Pump Installation Contractor Permitting
Requirements for Nonrestricted Contractor Permit, complete paragraph
- Well and Pump Installation Contractor Permitting
Requirements for Restricted Contractor Permit, complete paragraph
- Well and Pump Installation Contractor Permitting
Requirements for Becoming an Apprentice Well Contractor, application and testing
- 10 CSR 23-1: Definitions, Variances, and Permitting Requirements
10 CSR 23-1.050(2)(A)3, closed-book requirement, page 7
- 10 CSR 23-1: Definitions, Variances, and Permitting Requirements
10 CSR 23-1.050(2)(A)3, minimum score continuation, page 7
- 10 CSR 23-1: Definitions, Variances, and Permitting Requirements
10 CSR 23-1.050(1)(A)2, open-book requirement, page 7
- 10 CSR 23-1: Definitions, Variances, and Permitting Requirements
10 CSR 23-1.050(1)(A)2, minimum score continuation, page 7
- 10 CSR 23-1: Definitions, Variances, and Permitting Requirements
10 CSR 23-1.050(3)(A)2, apprentice testing, page 7
- 10 CSR 23-1: Definitions, Variances, and Permitting Requirements
10 CSR 23-1.050(3)(A)2, minimum score continuation, page 7
- Well and Pump Installation Contractor Permitting
Testing Fees, separately named tests
- RSMo section 256.606: Rules and regulations — applicants' qualifications
section 256.606(2), examination preparation and applicant qualifications