Washington Plumbing Contractor/Journeyman

This exam is required to be passed to obtain your State license. We stock all reference books in our online store. Shipping is always fast and affordable.

Washington Plumbing Contractor/Journeyman
Steps to Success

1. Register and pass your State Exams.
2. Submit affidavit form,licensing fee, and application to the State.

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About This License

Allows the installation, alteration, or repair of portable 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 speciality/residential plumber certificates, and medical gas piping installer endorsements.

Requirements to Obtaining your License

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

Exam Review, Training, Education

Please check back later for review and training for this license.

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:

  • 2012 Uniform Plumbing Code

Exam Details

  • Minimum score of 70%
  • The 3-part examination consists of Uniform Plumbing Code questions, a waste and vent pipe sizing drawing and a water pipe sizing drawing.

Continuing Education

All journeyman and residential speciality plumbers must obtain 16 hours of continuing education within a two-year renewal cycle. Plumber trainees must complete 8 of the required 16 hours every year. All of these required courses must be taken within the renewal cycle.

Applying to Get Your License

Journeyman application/exam fee is $139. Contractor Registration fee is $151.

Department of Labor and Industries
PO Box 44470
Olympia, WA 98504-4400

Reciprocity Agreement

As of this time, there is no reciprocal licensing.