Case Study
West Point Treatment Plant
¢ BACKGROUND Prior to construction of the West Point Treatment Plant, Seattle’s raw sewage spilled directly into Puget Sound. Built in 1966, West Point treats waste from approximately 1.6 million people in Seattle, Shoreline, north Lake Washington, north King County, and parts of south Snohomish County, as well as Seattle’s combined storm water/wastewater sewer system. ¢ THE PLANT West Point Treatment Plant treats up to 90 million gallons