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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

West Point Treatment Plant

West Point Aerial Image
The West Point Treatment Plant is located next to Discovery Park on Puget Sound.

Learn more about the history of West Point
Learn more about the history of West Point

Service area for the West Point Treatment Plant
West Point Treatment Plant service area. View larger version (PDF, 2.2MB).

Welcome to the West Point Treatment Plant, located about four miles northwest of downtown Seattle on the shores of Puget Sound.

The plant is part of King County's regional system that treats wastewater for about 1.5 million people and covers 420 square miles in the Puget Sound region. Every day, the West Point Plant cost-effectively treats wastewater and stormwater from homes, offices, schools, agencies, businesses and industries in Seattle, north King County, south Snohomish County, and some areas of Lake Washington.

Announcements

  • At the county’s treatment plants, inspection, maintenance, and repair projects occur routinely. Several projects are planned for West Point Treatment Plant to improve plant efficiency and operations and insure compliance with regulations. Learn more. 
  • Schedule a plant tour.

News releases

West Point newsletters

  • Fall 2009 (PDF)
    • King County's Wastewater Treatment Plants Win National Awards
    • Projects Improve Operations at West Point
    • Don't Flush Trouble
    • West Point NPDES Permit Renewed
    • Community Open House - all ages welcome!
  • Previous newsletters

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