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Public Health - Seattle & King County

Wastewater Program

Eastgate Environmental Health Services
14350 SE Eastgate Way [MAP]
Bellevue, WA 98007

Phone: 206-296-4932

Office and phone hours:

  • Monday, Tuesday, Wednesday, Friday: 8:00 am to 4:30 pm
  • Thursdays: 9:00 am to 4:30 pm
  • Monday - Friday phones are answered until 5:00 pm

  • Call our "Sanitarian of the Day" (SOD) for technical and general questions at 206-205-3999
    The SOD available Monday, Wednesday and Friday 8:00 am - 10:00 am only.
Information for specific groups

NEW: As-built drawing search engine (a 'map' of your septic system)

For septic system owners

For septic system professionals

For real estate professionals

NOTE: All septic systems must be inspected at the time of sale. Forms available on the following webpages:

Vashon-Maury Island Marine Recovery Area
A Marine Recovery Area is a specific designation under state law that establishes the goal of protecting, preserving and restoring shellfish harvest opportunities by assuring that property owners within the Marine Recovery Area inspect, and repair or replace as necessary, their On-Site Sewage (OSS) system.

Our services

The Wastewater Program provides educational, advisory and permitting services for owners of septic systems and certifications for several septic professionals. A Sanitarian of the Day is available Monday - Wednesday and Friday to help answer technical and general questions. Program activities include:

  • Complete list of Wastewater Program fees
  • Document pricelist
  • Issuance of installation and repair permits for septic systems
  • Review of the following:
    • Site application review
    • Review of repair proposals for failing septic systems
    • Boundary line adjustment review
    • Short plat and subdivision review
    • Building permit review (remodel project review)
    • Operation/Performance Monitoring Reports
  • Installation inspections of new, modified or repaired septic systems
  • Sewage complaint investigations relating to septic systems
  • Homeowner education
  • Operational checks of existing septic systems for sale or refinance
  • Certification program for all septic system Pumpers, Installers and Onsite System Maintainers
  • Enforcement
  • Sanitarian of the Day (SOD)
Free brochures

Free brochures are available. Call to order at 206-296-4932 or toll-free, 800-325-6165 ext. 6-4932.

Types of brochures:

  • For homeowners including condos, duplexes and mobile homes. Learn how to maintain your on-site septic system and avoid costly repairs. Download the electronic version of the Homeowners Guide (PDF).
  • For real estate professionals Information for your clients who are selling or buying homes or businesses with an on-site septic system.
  • For non-residential buildings including food establishments, businesses, schools, churches, etc.

About us:

The Public Health Wastewater Program helps to ensure that over 115,000 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.

Other resources:

Download the "Green Septic Systems" Brochure for Homeowners in PDF format