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For questions about the Wastewater Treatment Division Web site, please send an e-mail message or contact us at:

King Street Center
201 S. Jackson St., Suite 505
Seattle, WA 98104-3855
Phone: 206-684-1280
Fax: 206-684-1741
Telecommunication device for the deaf (TTY): 711

Get Directions to our office location in Seattle, Washington.

Staff Contacts

Puget Sound shoreline next to the West Point Treatment Plant, Seattle

Regionwide Projects

Emergency Generator Program

Since 2002, King County has installed emergency back-up power systems in nearly all of its off-site facilities to help prevent sewage back ups during electrical outages. The county will install new generators in the Barton and Murray pump stations in West Seattle, and is developing project plans to replace or rehabilitate aging generators at other facilities.

Reclaimed Water Comprehensive Plan

In 2009, the county is continuing to develop a comprehensive plan to guide King County's reclaimed water program and identify potential projects to make highly treated wastewater available for non-drinking purposes such as irrigation or industrial uses.

Regional Infiltration and Inflow (I/I) Control Program Implementation 

In 2009, King County is partnering with local sewer agencies on projects to repair leaky pipes in their system to keep stormwater and groundwater out of our regional treatment facilities. Controlling the infiltration and inflow can reduce demand for treatment and conveyance capacity, saving ratepayers money. The projects are among the first to implemented as part of the region's I/I Reduction Program, developed in partnership with the 34 cities and sewer agencies served by King County's regional wastewater agency.