Skip to main content
Many King County facilities are closed to the public. Learn how to access services remotely or while following social distancing guidelines.  
King County logo

Though the Brightwater system began operations in fall 2011, King County Wastewater Treatment Division continues to assess projects and maintenance needs of the plant.

Facilities and site restoration work is continuing at some of the construction sites.

For construction information, please contact David Freed at:

Learn about the Brightwater treatment system construction project.

10211546794_07eb70c9cf_zStaff on top of digesters

View more photos on our Flickr site  .

Contact us

24 hour emergency and odor reporting:   206-263-9500
Administration:  206-263-9465

22505 State Route 9 S.E.
Woodinville, WA 98072-6010

Directions and map