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

King Street Center
201 S. Jackson St., Suite 500
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

We want to hear from you 

clipboardSince March 2010, King County has presented at public meetings alternative means for CSO control in the four project basins: Barton and Murray (West Seattle), South Magnolia and North Beach. The project team has reviewed these proposals using a range of basin-specific factors. We welcome all community feedback including input in these areas.

Contact us

  • Email CSOBeachProjects@kingcounty.gov
  • Call us
    • Barton and Murray basins: Martha Tuttle at 206-684-1207
    • Magnolia and North Beach basins: Monica Van der Vieren at 206-263-7301