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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

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Puget Sound shoreline next to the West Point Treatment Plant, Seattle

West Point Treatment Plant

The plant

entry to West Point
The entry to the plant. The walking and biking trail is on the overhead bridge, which keeps people away from traffic.

The 32-acre treatment plant is on the shores of Puget Sound next to Discovery Park (external link), Seattle's largest and most natural park. The average capacity of the plant is 133 million gallons per day.

The plant is designed to address concerns from environmental groups and the neighboring community. The new facilities include the following:

  • walls and berms to hide the plant and provide security
  • extensive landscaping with native trees, shrubs and ground cover
  • partial covering of some facilities
  • a freshwater wetland
  • improvements to the trails, roads and facilities in Discovery Park.

Projects improve operations at West Point

King County constantly works to maintain and improve its facilities and insure safe, reliable service. 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.

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