Facility Locator
King County Wastewater Treatment Service Area

Click on the map or text links below to view the regional treatment plants, combined sewer overflow (CSO) treatment facilities, pump stations (PS), and regulator structures (RS) owned and operated by King County. You can also enter an address or street intersection (in the field below) to view our facilities located nearby.

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View facility list in tabular format.

Glossary of terms

• CSO treatment facility -- a plant designed to provide primary treatment of combined sanitary sewage and storm water for peak flows above the 2.25 times the average wet weather flow. Such plants operate only intermittently, unlike most wastewater treatment plants which operate continuously. More about the CSO Control Program.
• Pump station (PS) -- a pump station is used when sewer trunk lines have conveyed flows to a low-lying area. The pump station lifts the wastewater up to a point where it can flow by gravity to a wastewater treatment plant or another pump station.
• Regulator station (RS) -- a structure that controls the flow of wastewater from two or more input pipes (trunk lines) to a single output (usually a larger interceptor line). Regulators can be used to restrict or halt flow, thus causing wastewater to be stored in the conveyance system until it can be handled by the treatment plant.
• Wastewater collection system -- the piping and pumping system used for the collection and conveyance of domestic, commercial, and industrial wastewater.
• Wastewater treatment plant -- a plant designed to provide preliminary, primary, and secondary treatment and disinfection of sanitary sewage. The wastewater treatment process produces valuable byproducts that can be reused within a plant and throughout the region, including biosolids, reclaimed water and energy recovery. More about the wastewater treatment process.
• More wastewater glossary of terms.

For More Information

For more information about the Facility Locator Web page, please contact Peter Keum by e-mail or at 206-263-3118.

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

Department of Natural Resources and Parks
Wastewater Treatment Division
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

Updated: March 19, 2007
 

Related Information:
King County iMAP is an application that allows you to view King County spatial information (GIS data and images) in a map display that you control.