100+ Free WA Well Driller Practice Questions

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What is the purpose of a check valve in a Washington submersible pump system?

To prevent backflow of water down the drop pipe when the pump shuts off

To check the water quality

To regulate pump speed

To filter sediment

to track

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

2026 Statistics

Key Facts: WA 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

$300

License Fee

LicenseMap 2026

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

Sample WA Well Driller Practice Questions

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

1In Washington State, which agency issues well operator (well driller) licenses?

A.Department of Labor and Industries (L&I)

B.Department of Ecology

C.Department of Health

D.Department of Natural Resources

Explanation: The Washington State Department of Ecology runs the well operator licensing program under RCW 18.104 and WAC 173-162. L&I handles pump installer licenses (PL03/03A) separately through its plumbing certification program.

2What are the two categories of well operator licenses in Washington?

A.Residential and Commercial

B.Water well and Resource protection well

C.Shallow and Deep

D.Driller and Pump Installer

Explanation: Washington offers two categories of well operator licenses: Water Well and Resource Protection Well. Each category has both trainee and full licensee levels. Pump installer licenses are issued separately by L&I, not by Ecology.

3What is the primary Washington Administrative Code (WAC) chapter governing well construction standards?

A.WAC 173-100

B.WAC 173-150

C.WAC 173-160

D.WAC 173-200

Explanation: WAC 173-160 (Minimum Standards for Construction and Maintenance of Wells) contains the construction standards for wells in Washington State. WAC 173-162 covers well operator licensing requirements.

4What is the primary Revised Code of Washington (RCW) governing well drilling in Washington?

A.RCW 18.27

B.RCW 18.104

C.RCW 18.160

D.RCW 90.44

Explanation: RCW 18.104 (Water Well Construction) is the primary state law governing well drilling and well operator licensing in Washington. It authorizes the Department of Ecology to regulate well construction and license well operators.

5How far in advance must a driller submit a Notice of Intent (NOI) before starting well work in Washington?

A.24 hours

B.48 hours

C.72 hours

D.7 days

Explanation: A Notice of Intent (NOI) must be submitted to the Department of Ecology at least 72 hours before starting any well work in Washington. The NOI can be submitted online and is required for all well construction, alteration, and decommissioning work.

6What is the NOI fee for a water well with casing less than 12 inches in diameter in Washington?

A.$100

B.$150

C.$200

D.$300

Explanation: The NOI fee for a water well with casing less than 12 inches in diameter is $200 per well. For wells with 12-inch or larger casing, the fee is $300 per well. Other well types have different fee structures.

7What is the NOI fee for a water well with casing 12 inches or larger in Washington?

A.$200

B.$250

C.$300

D.$400

Explanation: The NOI fee for a water well with casing 12 inches or larger in diameter is $300 per well. This higher fee reflects the larger impact and increased regulatory oversight for high-capacity wells.

8Within how many days after well completion must a driller submit the Well Construction Report in Washington?

A.7 days

B.14 days

C.30 days

D.60 days

Explanation: The Well Construction Report must be submitted to the Department of Ecology within 30 days of well completion. The report must include construction details, geologic information, water level data, and pump test results.

9What is the license term for a Washington well operator license?

A.1 year

B.2 years

C.3 years

D.5 years

Explanation: Washington well operator licenses are issued for a 2-year term and must be renewed before the expiration date. During the 2-year period, the driller must obtain the required continuing education units (CEUs) for renewal.

10What is the license renewal fee for a single well operator license (water well OR resource protection well) in Washington?

A.$25

B.$50

C.$75

D.$150

Explanation: The renewal fee for a single well operator license (either water well or resource protection well) is $75. If the operator holds both license types, the renewal fee is $150.

About the WA Well Driller Exam

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

Questions

100 scored questions

Time Limit

2 hours

Passing Score

70%

Exam Fee

$300 (Washington Department of Ecology)

WA 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

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

20%

Groundwater

Aquifer protection, water quality, contamination prevention, Pacific NW geology

15%

Professional Practice

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

How to Pass the WA Well Driller Exam

What You Need to Know

Passing score: 70%
Exam length: 100 questions
Time limit: 2 hours
Exam fee: $300

Keys to Passing

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

WA Well Driller Study Tips from Top Performers

1Master Washington's well construction standards and casing requirements under Ecology rules

2Understand proper grouting procedures for Washington's basalt and alluvial geology

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

4Know groundwater protection measures for Washington's Columbia Basin aquifers

5Review well log documentation requirements and abandonment procedures

Frequently Asked Questions

What does the Washington well driller exam cover?

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

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

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

What experience is required for a Washington well driller license?

Washington requires experience working under a licensed driller before you can sit for the licensing exam. Contact the Department of Ecology for current requirements.

How often must the Washington well driller license be renewed?

License renewal requirements include completing continuing education hours. Contact the Department of Ecology for the current renewal cycle and CE requirements.