Pipefitter & Steamfitter license in Washington
What it takes to hold a Journey Level Plumber (PL01) certificate in Washington, from the Washington State Department of Labor & Industries.
- 8,000Supervised work hours
- $202.10Application fee
- 8Registered apprenticeship sponsors
- $81,030Median pay in Washington
Requirements
Journey Level Plumber (PL01) certificate requirements
| Supervised work hours | 8,000 |
|---|---|
| Exam | Journey level plumber exam (PSI) |
| Application fee | $202.10 |
| License fee | $242.70 |
The steps
- Log 8,000 hours of supervised work.
- Apply to the Washington State Department of Labor & Industries ($202.10 application fee).
- Journey level plumber exam (PSI).
Check the board before you apply: Washington State Department of Labor & Industries.
Apprenticeships
Registered apprenticeship sponsors in Washington
8 registered apprenticeship sponsors in Washington match this trade in the DOL partner file. Most of the supervised hours can be earned inside a paid registered apprenticeship; see registered apprenticeship sponsors in Washington on RegisteredTradeSchools.com. A listing is not confirmation of current openings.
Pay
What licensed pipefitters and steamfitters earn in Washington
Median $81,030, bottom 10% $49,490, top 10% $141,860 (BLS OEWS May 2025). Full Washington pay breakdown.
Sources
Figures as of BLS OEWS May 2025 estimates (released 2026-05-15) and BLS Employment Projections 2025–35 (released 2026-08-27).
- Licensing: Washington State Department of Labor & Industries, https://lni.wa.gov/licensing-permits/plumbing/plumber-certification/get-or-renew-your-certification, retrieved 2026-11-04.
- Licensing: Washington State Department of Labor & Industries, https://app.leg.wa.gov/wac/default.aspx?cite=296-400A-045, retrieved 2026-11-04.
- Apprenticeship sponsor counts: U.S. DOL Office of Apprenticeship partner sponsors file (CSV), retrieved 2026-11-04. Matched to the trade by keywords in the organization name; the file has no occupation field and no openings status.
- Wages: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics (OEWS), May 2025 estimates, released 2026-05-15.
Compiled by the HighPayingTrades Data Team. Items a board does not publish are left out, not estimated. Last checked 2026-11-04.