Pasco, WA Building Safety: Plumbing Permits (2026)
Key Facts
- Governing code
- State-adopted UPC via WAC 51-56
- Minimum plumbing permit fee
- $50.00
- Gas appliance/piping permit fee
- $50.00
- Max fine per violation
- $500.00
- Continuing violation
- Each day is a separate offense
- Basement requirement
- Floor drain plus backflow preventer
- Appeals body
- Mid-Columbia Building Appeals Commission
Summary
Pasco enforces the state-adopted Uniform Plumbing Code under PMC 16.20, requiring a permit for plumbing work with a $50.00 minimum permit fee. Violators face fines up to $500.00 per offense, with each day of continuing violation counted separately.
The most current state-adopted Uniform Plumbing Code published by the International Association of Plumbing and Mechanical Officials, as amended by the Washington State Building Code Council and published as Chapter 51-56 WAC, is adopted as the plumbing code of the City except as hereinafter amended.
Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 4837, passed May 4, 2026).
Full Breakdown
020. 00 under that same section. 180. 040, the seven-member Mid-Columbia Building Appeals Commission jointly appointed with Franklin and Benton Counties, whose members include a civil engineer, an architect, a general contractor, a specialty contractor and a fire specialist, each serving five-year terms. 050 requires every building to have sanitary facilities under the adopted plumbing and building codes and mandates that every basement include at least one floor drain with a backflow preventer, located in the utility room, bathroom, or furnace room. 070 makes it unlawful for any person, firm, or corporation to violate any provision of the chapter.
Violations & Fines
Violating any provision of PMC Chapter 16.20 is punishable by a fine of not more than $500.00 per offense for an individual, and not more than $500.00 for a firm or corporation. Continuing violations are treated as a separate offense for each day they persist, so unpermitted plumbing work left uncorrected can accumulate daily fines under PMC 16.20.070.
Frequently Asked Questions
Do I need a permit for plumbing work in Pasco?
What happens if I do plumbing work without a permit in Pasco?
Is a floor drain required in a Pasco basement?
Where do I appeal a plumbing permit decision in Pasco?
Sources & Official References
Other rules in Pasco
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