Washington water well driller license: Complete 2026 Guide

Official-source review: August 25, 2026

Washington water well driller license: Washington licenses the person controlling or operating well-construction equipment through the Department of Ecology and separately requires the well-contracting business to be registered and bonded. Water-well and resource-protection-well operator categories have distinct scopes.

Fast answer: For the direct new-applicant route, document 5,400 supervised drilling hours and 32 approved continuing-education units, pay the $75 application fee and pass the written examination; out-of-state experience may trigger an onsite examination. The trainee route begins after 600 supervised hours, 6 CEUs and both written and onsite examinations.

Washington water well driller license requirements experience examination fees renewal and official sources — Washington requirements summarized from the responsible agencies. Local permits, employers and certifying bodies may impose additional conditions.

What the Washington water well driller license covers

Washington licenses the person controlling or operating well-construction equipment through the Department of Ecology and separately requires the well-contracting business to be registered and bonded. Water-well and resource-protection-well operator categories have distinct scopes.

Water-well construction, alteration and decommissioning.
Separate resource-protection-well licensing for monitoring and related borings.
Ecology notice, construction standards and well-report requirements.
Contracting through a properly registered and bonded business.

Pump electrical and plumbing work may additionally require Washington 03/03A and PL03/PL03A credentials.

Washington water well driller license requirements at a glance

Requirement	Current rule or route
Route	Ecology water well operator license plus registered and bonded well-contractor business
Eligibility	Direct new applicant: 5,400 supervised drilling hours and 32 CEUs. Training-license route: 600 supervised hours and 6 CEUs, followed by at least 3,600 licensed-trainee hours and 14 CEUs for operator conversion.
Exam	Ecology written examination; an onsite examination applies to trainee applicants and may apply to out-of-state experience.
Fees	$75 for each operator or training license application and $75 for each biennial license renewal. Contractor registration, bond, insurance and well-notice fees are additional.
Bond or insurance	The well-contractor business must be registered and bonded under Washington contractor law; maintain required liability insurance.
Renewal	Every two years; training licenses are nonrenewable except for a one-time extension for good cause.

Do not treat this table as an approval notice. The agency, certification organization or local jurisdiction makes the final eligibility decision and may request additional evidence.

How to complete the Washington water well driller license process

Confirm the correct credential and scope.
Complete required training and experience.
Pass the required examination.
Submit the application and fees.
Complete business licensing, bond and insurance requirements.
Obtain permits and renew on time.

Keep copies of every experience certificate, examination result, bond or insurance filing and payment receipt. Names and business entities should match across the application and supporting documents.

Important Washington rules and boundaries

The operator license and contractor registration are separate requirements.
Water-well and resource-protection scopes are not automatically interchangeable.
Out-of-state drilling experience may require an onsite examination.
Project notices, construction standards and reports remain mandatory.

Washington may separate the credential held by a worker from the contractor license held by the business, while preserving local authority over permits and inspections. Confirm every applicable layer before bidding, advertising or beginning regulated work.

Washington water well driller license cost and renewal

Add training, examination, bond, equipment and local permitting costs.

Renew by the published deadline and retain all supporting records.

Government charges are only part of the expected cost. Training, examination preparation, fingerprints, surety premiums, insurance, equipment calibration and local permits can add to the total.

Washington water well driller license checklist

Confirm that this credential matches the exact work you will perform.
Check whether the applicant is an individual, sole owner or separate business entity.
Collect experience and training records before submitting the application.
Use the current official form and fee schedule.
Complete every required examination or approved certification route.
File bonds, insurance and fingerprints when applicable.
Check county, city, water supplier and building-permit rules.
Save the expiration date and renewal requirements.

Frequently asked questions

Is this credential statewide?

Yes; local permits and inspections remain separate.

Is an exam required?

Ecology written examination; an onsite examination applies to trainee applicants and may apply to out-of-state experience.

When does it renew?

Every two years; training licenses are nonrenewable except for a one-time extension for good cause.

Are local approvals separate?

Yes.

Official sources used

Verified licensing details

Jurisdiction: state credential plus local permits and inspections
Licensing authority: Washington State Department of Ecology Well Construction Program
Fees: $75 for each operator or training license application and $75 for each biennial license renewal. Contractor registration, bond, insurance and well-notice fees are additional.
Experience: Direct new applicant: 5,400 supervised drilling hours and 32 CEUs. Training-license route: 600 supervised hours and 6 CEUs, followed by at least 3,600 licensed-trainee hours and 14 CEUs for operator conversion.
Exams: Ecology written examination; an onsite examination applies to trainee applicants and may apply to out-of-state experience.
Insurance or bond: The well-contractor business must be registered and bonded under Washington contractor law; maintain required liability insurance.
Continuing education: Fourteen CEUs during each 24-month license term, including at least two units on Washington drilling or licensing regulations.
Renewal period: Every two years; training licenses are nonrenewable except for a one-time extension for good cause.

Official sources

Official sources last checked August 24, 2026.

Requirements can change and local rules may apply. Confirm the current requirements with the official authority before paying a fee or beginning work.