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West Point Treatment Plant
Find information and facts about West Point Treatment Plant located next to Discovery Park in Seattle, including the treatment process, capital and improvement projects, and ongoing public engagement.
Updates
April 2026
Meet the new West Point plant manager
We are thrilled to introduce you to Julio Rodriguez, our new West Point Treatment Plant manager. Julio joined King County Wastewater Treatment Division in 2016 through the Operator-in-Training (OIT) Program. After completing the program, he earned a position on one of West Point’s crews. He later advanced to Senior Operator and then Crew Supervisor. He was the first OIT alum to become a supervisor! Now, with this latest promotion, Julio is the first OIT alum to serve as a plant manager.
Congratulations, Julio!
Energy efficiency pays off – saving $$
Our sustainability upgrades are saving energy and money across the wastewater system. We recently received $5.2 million in savings through federal and local incentives. The funding is tied to clean energy investments completed at West Point in 2024. This means borrowing less money for critical upgrades, lowering long-term costs, and supporting King County’s Strategic Climate Action Plan goals.
Located next to Discovery Park in Seattle, West Point Treatment Plant (West Point) began operating in 1966. West Point cleans more wastewater each day than any other plant in Washington. Approximately 90 million gallons of wastewater per day are treated at the facility during the dry months. Seattle’s combined stormwater/wastewater sewer system also flows into West Point. West Point serves homes and businesses in Seattle, Shoreline, north Lake Washington, north King County, and parts of south Snohomish County.
Learn more
- Learn how West Point's treatment process works.
- Get the facts on the West Point's operations.
- Discover how West Point contributes to a sustainable future for the surrounding community and environment.