The Plumber Advisory Board is a Board under the Washington State Department of Labor & Industries in charge of the Plumber Certification Program. The plumber certification program certifies plumbing professionals and ensures that their work meets State requirements. For further information on the State dispositions for plumbing work, refer to Chapter 18.106 of the Revised Code of Washington.
Washington State Department of Labor & Industries
PO Box 44470
Olympia WA 98504-4470