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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
Brightwater Treatment System Banner

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King County’s Wastewater Service Area

King County treats wastewater from portions of King, Snohomish and Pierce counties. Brightwater will be the third regional treatment plant and will serve the northern part of the service area.

King County’s Wastewater Service Area

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