100+ Free CT Well Driller Practice Questions

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Why is it recommended to coordinate between the well driller and pump installer in Connecticut?

So disinfection can be combined with pressure and leak tests, and the required bacteria test can be performed simultaneously

It is not recommended to coordinate

To save money on separate site visits only

The driller must install the pump themselves

to track

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Free Well Driller Practice Test by State 2026: 2,500+ Questions21 min read

2026 Statistics

Key Facts: CT Well Driller Exam

70%

Passing Score

State DNR

100 Q

Practice Questions

OpenExamPrep

2 hrs

Exam Time

State DNR

8 hrs

CE Per Cycle

State DNR

$150

License Fee

LicenseMap 2026

Connecticut requires well drillers and pump installers to pass a state licensing exam covering well construction standards, groundwater protection, and Department of Consumer Protection regulations.

Sample CT Well Driller Practice Questions

Try these sample questions to test your CT Well Driller exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which Connecticut state agency issues well drilling licenses?

A.Department of Consumer Protection (DCP)

B.Department of Public Health (DPH)

C.Department of Energy and Environmental Protection (DEEP)

D.Department of Transportation

Explanation: The Connecticut Department of Consumer Protection (DCP), Occupational and Professional Division, issues and administers all well drilling licenses and registrations under Connecticut General Statutes §25-126 through §25-137.

2What is the W-1 license in Connecticut's well drilling licensing system?

A.Water Supply Drilling Contractor — authorizes all water well construction and pump work as a contractor

B.Water Supply Drilling Journeyperson

C.Limited Non-Water Supply Driller

D.Driller Trainee

Explanation: The W-1 (Water Supply Drilling Contractor) is the highest-level license, authorizing the holder to construct water supply wells including installation, repair, and maintenance of pumps, pump motors, piping, valves, wiring, electric controls, and tanks as a contractor.

3What is the W-2 license in Connecticut?

A.Water Supply Drilling Journeyperson — may only work in the direct employment of a W-1 contractor

B.Water Supply Drilling Contractor

C.Limited Non-Water Supply Driller Contractor

D.Pump Installer Contractor

Explanation: The W-2 (Water Supply Drilling Journeyperson) permits the registrant to construct wells and perform pump work, but only while in the direct and regular employment of a contractor registered for this work (W-1 contractor). W-2 holders cannot operate independently.

4How many months of driller trainee experience are required for a Connecticut W-2 (Journeyperson) registration?

A.24 months as a driller trainee or equivalent experience

B.12 months

C.36 months

D.6 months

Explanation: The W-2 registration requires twenty-four (24) months as a driller trainee or the equivalent experience and training. The applicant must also pass a written examination administered by DCP for this registration level.

5What is a W-3 license in Connecticut?

A.Limited Non-Water Supply Driller Contractor — for non-water supply wells and pump work

B.Water Supply Drilling Contractor

C.Water Supply Drilling Journeyperson

D.Driller Trainee

Explanation: The W-3 (Limited Non-Water Supply Driller Contractor) permits construction of non-water-supply wells, including installation, repair, and maintenance of pumps, motors, piping, valves, wiring, electric controls, and tanks. It requires 24 months experience or two years as a W-4.

6What is a W-4 license in Connecticut?

A.Limited Non-Water Supply Driller Journeyperson — works under a W-3 contractor for non-water supply wells

B.Water Supply Drilling Contractor

C.Water Supply Drilling Journeyperson

D.Well Casing Extension Driller

Explanation: The W-4 (Limited Non-Water Supply Driller Journeyperson) permits construction of non-water-supply wells and pump work only while in the direct and regular employment of a contractor registered for this work. It requires one year as a driller trainee.

7What is a W-5 license in Connecticut?

A.Limited Well Casing Extension Driller Contractor

B.Water Supply Drilling Contractor

C.Pump Installer

D.Geothermal Driller

Explanation: The W-5 (Limited Well Casing Extension Driller Contractor) permits the holder to perform well casing extension work. This is a specialized limited license for extending existing well casings rather than constructing new wells.

8What examination requirement applies to all Connecticut well drilling license applicants?

A.All applicants must achieve a passing score on a written examination administered by DCP

B.No exam is required

C.Only an oral exam is required

D.Only a practical field test is required

Explanation: All Connecticut well drilling registration levels (W-1 through W-5) require applicants to achieve a passing score on a written examination administered by the Department of Consumer Protection. The exam tests knowledge of well construction standards and regulations.

9Which Connecticut agency is the jurisdictional authority for protecting private drinking water wells?

A.The local health department (town or district health department)

B.The state police

C.The fire department

D.The town clerk

Explanation: In Connecticut, the local health department (such as a town health department or district health department like CCHD or NCDHD) is the jurisdictional agency responsible for protecting and enforcing regulations for private drinking water wells.

10What Connecticut regulations govern well drilling?

A.CT DCP Well Drilling Regulations §25-126 through §25-137 and §25-128-1 through §25-128-64

B.Only federal EPA regulations

C.Only OSHA standards

D.No regulations exist

Explanation: Connecticut well drilling is governed by DCP regulations under Connecticut General Statutes §25-126 through §25-137, and detailed technical regulations §25-128-1 through §25-128-64. The Connecticut Public Health Code (§19-13-B51a-m and §19-13-B101) also applies.

About the CT Well Driller Exam

The Connecticut well driller exam covers state well construction standards, casing and grouting requirements, pump installation, groundwater protection, DCP licensing regulations, well abandonment procedures, and professional practice under Connecticut well codes.

Questions

100 scored questions

Time Limit

2 hours

Passing Score

70%

Exam Fee

$150 (Connecticut Department of Consumer Protection)

CT Well Driller Exam Content Outline

25%

Well Construction

Casing, grouting, well design, drilling methods, well development

20%

Pump Installation

Pump types, sizing, electrical connections, pressure systems, maintenance

20%

Regulations

DCP licensing, well standards, reporting requirements, fees, CE requirements

20%

Groundwater

Aquifer protection, water quality, contamination prevention, New England geology

15%

Professional Practice

Well logs, abandonment procedures, safety, contracts, client relations

How to Pass the CT Well Driller Exam

What You Need to Know

Passing score: 70%
Exam length: 100 questions
Time limit: 2 hours
Exam fee: $150

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

CT Well Driller Study Tips from Top Performers

1Master Connecticut's well construction standards and casing requirements under DCP rules

2Understand proper grouting procedures and materials for New England bedrock geology

3Study pump types, sizing calculations, and electrical connection requirements

4Know groundwater protection measures for Connecticut's aquifer systems

5Review well log documentation requirements and abandonment procedures

Frequently Asked Questions

What does the Connecticut well driller exam cover?

The exam covers well construction standards, casing and grouting requirements, pump installation, groundwater protection, Connecticut DCP regulations, and professional practice.

What is the passing score for the CT well driller exam?

A minimum score of 70% is required to pass the Connecticut well driller licensing examination.

What experience is required for a Connecticut well driller license?

Connecticut requires experience working under a licensed driller before you can sit for the licensing exam. Contact the DCP for current requirements.

How often must the Connecticut well driller license be renewed?

License renewal requirements include completing continuing education hours. Contact the Connecticut DCP for the current renewal cycle and CE requirements.