West Point Treatment Plant

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

Learn more about the history of West Point

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.

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© 2009 King County

News releases

Nov. 12, 2009 -- Celebrate sanitation on 'World Toilet Day' -- Free treatment plant tours, Nov. 19
Oct. 26, 2009 -- Environment, economy benefit from sale of green power to Seattle City Light
Oct. 19, 2009 -- County clean-water facilities get good marks from neighbors

View 2009 Near Neighbor Survey

Sept. 25, 2009 -- Meetings focus on projects to reduce storm-related sewer overflows
Sept. 23, 2009 -- Community meeting on West Point Treatment Plant improvement projects, Oct. 15
More 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

Related information

West Point projects

Other WTD Construction Projects