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Most King County offices will be closed on Monday, for Martin Luther King Day.  
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  • Drinking water program
    Regulation small public and individual private water systems to prevent communicable diseases and illnesses.

  • Wastewater program
    Services and regulations to ensure that over 85,000 septic systems including 192 septic systems in Seattle are safe. Septic systems treat wastewater when homes and buildings are not connected to public sewer systems. Also provides educational, advisory and permitting services for owners of septic systems and certifications for several septic professionals.

  • Water recreation program
    Plan review, permits and inspections for public and semi-public pools and spas in King County.
  • Contact us

Environmental Health Services
401 5th Ave, Suite 1100
Seattle, WA 98104

Phone: 206-263-9566 (answered until 4:00 pm)
Fax:
206-296-0189
Inspection request line:
206-205-0935

Permit hours:

  • Monday, Tuesday, Wednesday & Friday:
    8:00 am – 4:00 pm

  • Thursdays:
    9:00 am – 4:00 pm

Environmental Health Services
14350 SE Eastgate Way
Bellevue, WA 98007

Phone: 206-477-8050 (answered until 4:00 pm)
Fax:
206-296-9792
Inspection request line:
206-205-0935

Permit hours:

  • Monday, Tuesday, Wednesday & Friday:
    8:00 am – 4:00 pm

  • Thursday:
    9:00 am – 4:00 pm

Find a plumbing and gas piping inspector nearest you

Link/share our site at www.kingcounty.gov/plumbing

SPECIAL NOTICES

Potential delayed inspections

Due to the SR 99 Highway closure and the high potential of extreme traffic congestion, some plumbing and gas inspections may be delayed. Please remember that inspection requests on the IVR are not scheduled until the inspector informs the requestor of an approximate time of inspection. We appreciate your patience while we continue to provide the best service we can through this period. Thank you.

For Vashon Island residents

Plumbing and gas piping inspections located on Vashon Island are only performed on Wednesdays.

New cash receiving process

Starting October 1, 2018, King County Environmental Health will be implementing a new cash receiving process. Our last financial transactions will be received at 3:30pm. If you bring in a financial transaction after 3:30pm it will be received but processed the next business day. Our closing time will remain at 4pm. Our office hours will remain the same: Monday, Tuesday, Wednesday, Friday: 8-4pm. Thursday 9-4pm.

Plan Review required for plumbing and gas piping installations

The Washington state adopted plumbing code (2015 Uniform Plumbing Code) section 113 requires a permit to be obtained from the Authority Having Jurisdiction prior to each installation, alteration, repair, replacement or remodel. Section 114 sets requirements for a permit application.

Subsection 4 states that a permit application to be "accompanied by plans, diagrams, computations and specifications, equipment schedules and other data as required by the Authority Having Jurisdiction."

Be informed: Not all plumbing and gas piping installations are subject to a plan review. Please open and read the "Plan Review Submittal" information (open Plan Review Information on the left side of this page) to determine if your project requires a plan review.

Please check our website periodically for upcoming updates and changes.