Washington Plumbing Contractor/Journeyman

Requirements to Obtaining your License
- Plumbing must be conducted through registered contractors.
- Experience requirements are 6,000 hours for Residential Specialty and 8,000 hours, of which 4,000 must be commercial, for Journeyman.
- All applicants for journeyman and residential specialty exams are required to have completed, prior to testing, 16 hours of continuing education with a minimum of 4 hours of that being electrical.

Work that can be Done Under this License
Allows the installation, alteration, or repair of potable water, liquid waste, and medical gas systems within a building in the state of Washington you must be certified by the Department of Labor and Industries. The Department issues trainee, journeyman, and specialty/residential plumber certificates, and medical gas piping installer endorsements.




Books and References for the Exam
These books are available for purchase from our online contractor’s bookstore or by calling our office at 1-800-952-0910.
The following references are not allowed to be used during testing:
- 2009 Uniform Plumbing Code
- Washington Amendments to the Uniform Plumbing Code
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Permanent Tabs
To help you on your exam, you are allowed to place permanent tabs on your text books. We offer:
- Pre-Printed Tabs
- Blank Tabs
Reference Books
Our online store offers hundreds of books at the best pricing possible.
To find books for your exam, click here and then click "State Exam".



