|
| Certification |  |
| |
Plumbers in Washington must be certified by Labor
and Industries
Get or renew your certification ...
Online
Please note: New applications and renewals submitted online between the hours of 6 p.m. and 3 a.m. may not be updated for up to 48 hours.
By mail
- Print the below application for the plumber certification examination, the
medical gas piping installer endorsement or reciprocal certification.
-
Plumber Certification Application (281
KB PDF / 3 min.)
In person
See also:
For more information:
Facts About State Certification for Plumbers
(69 KB PDF)
- Get an overview of the requirements and process and frequently asked questions.