Skip to main content
King County logo
  • 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

IMPORTANT NOTICE: Plan Review Required for Plumbing and Gas Piping Installations

The WA 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.

ATTENTION:

Public Health — Seattle & King County is seeking an individual that is a licensed Professional Plumbing/ Mechanical Engineer to serve on the King County Plumbing Board of Appeals. Per King County ordinance 16.32 King County Plumbing Code, 16.32.170 Board of Appeals; King County shall provide the means of appeal for "Any party aggrieved by a decision of the Authority Having Jurisdiction..."

Applicants are required to be King County residents per: Executive Policy LES 7-1 (AEP) prohibits non King County residents from serving on King County boards and commissions. Please follow the directions for submittal at the end of the application (PDF).