Wastewater Program

Black River Environmental Health
900 Oakesdale Ave. SW, Suite 100 [ MAP ]
Renton, WA 98057
Phone: 206-296-4932

Office hours

Please see 2009 site closure schedule on King County furlough days which includes most Public Health offices, Public Health Centers and services.

Information for specific groups


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 Web pages:

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:

Free brochures

Free brochures are available at the Black River Public Health Center. Call to order at 206-296-4932 or toll-free, 800-325-6165 ext. 6-4932.

Types of brochures:



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.


see also

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


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