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Plumber
License Description Individuals must pass the required Plumber Certification examination, submit the required application and pay the required $151.90 fee. The examination consists of technical and general trade knowledge, code application knowledge for wastes and vents, and code application for water piping. The examination is based on the 2012 Uniform Plumbing Code with Washington State amendements. Individuals must also pass the Backflow specialty examinination.
Licensing Agency
Department of Labor and Industries
7273 Linderson Way SW
Tumwater, WA 98501-5414
(360) 902 5800
CADZ235@LNI.WA.GOV
Active Status Active
Continuing Education Continuing education required to maintain license
Criminal Record No criminal record prohibitions
Education Specific course required
Exam Both state and third-party exams required
License Type Stand-alone license
License Updated 07/13/2022
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