How to Become a Plumber in Washington State: Complete Licensing Guide

Washington State offers one of the most lucrative and well regulated plumbing markets in the nation. It is also one of the most difficult places to break into the plumbing trade. With plumbers ranking seventh nationally for wages and a projected 10% growth rate through 2033, the Evergreen State provides excellent opportunities for skilled tradespeople. However, Washington also maintains some of the strictest licensing requirements in the country, with mandatory certification at every level and active enforcement throughout all 39 counties.