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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

Brightwater Project

Solids area digesters with Energy Building (foreground)- click for more photos 
Solids area digesters with Energy Building - view more project photos

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Brightwater will serve portions of King and Snohomish counties.

In response to increased growth in our region, King County is constructing a new regional wastewater treatment plant, called Brightwater. Construction started in 2006 and is scheduled to be completed in 2010, with operations starting in 2011.

Brightwater will serve portions of King and Snohomish counties and support our mission to protect public health and the environment. The new facilities will include a treatment plant, conveyance (pipes and pumps taking wastewater to and from the plant), and a marine outfall.

This Web site provides information about the project, including:

Updates

Fast Facts: Brightwater cost estimates

Information about King County's proposed Brightwater tunnel machine repair work at 53rd Ave. Northeast, Lake Forest Park.

Information for King County's Brightwater tunnel machine repair work at Maywood Hills Elementary School, Bothell.

Of interest

News releases

Contact us if you need more information about Brightwater.

King County Brightwater Project

22505 State Route 9
Woodinville, WA 98072
E-mail: Brightwater
Phone: 206-263-9453
TTY Relay: 711

For construction-related questions and urgent issues, please contact the Brightwater construction information line at 206-205-5989.

Driving directions to Brightwater project office.