How many hours of pre-license education does Washington require for plumbers?

8 hours for Pre licensure, as set by the Washington State Department of Labor & Industries, Plumber Certification.

Is an exam required to get licensed in Washington?

Our research of the Washington State Department of Labor & Industries, Plumber Certification rule does not show a required exam alongside the education hours. Confirm with the board before you apply.

Can I complete these hours online?

Yes. Our pre-license courses are delivered entirely online and self-paced, with a certificate of completion issued as soon as you finish.

How to get a Pre licensure license in Washington

The Washington State Department of Labor & Industries, Plumber Certification sets the education you must complete before it will license you. Here is the exact requirement, by license class.

Washington State Department of Labor & Industries, Plumber Certification

Required hours by license class

Pre licensure

8 required hours

We have researched this requirement and are building the course now.

Source: Washington State Department of Labor & Industries, Plumber Certification · verified 2026-09-06

Common questions

How many hours of pre-license education does Washington require for plumbers?: 8 hours for Pre licensure, as set by the Washington State Department of Labor & Industries, Plumber Certification.
Is an exam required to get licensed in Washington?: Our research of the Washington State Department of Labor & Industries, Plumber Certification rule does not show a required exam alongside the education hours. Confirm with the board before you apply.
Can I complete these hours online?: Yes. Our pre-license courses are delivered entirely online and self-paced, with a certificate of completion issued as soon as you finish.

Already licensed? This page covers getting your first license. If you already hold one, Washington plumbers renewal requires 24 hours of continuing education — see Washington plumbers continuing education.