Soos Creek Water & Sewer District (SCWSD) has served the residents of southeast King County since 1939. We are a municipal corporation formed when Water District 58 and Cascade Sewer District merged in 1987.
In 1939 we began with a few hundred customers in an area of less than 2 square miles. We now provide water and sewer services to almost 100,000 people living and working across 35 square miles.
Our water comes from Seattle Public Utilities via Lake Youngs, which is adjacent to the District’s office. The sanitary sewer system conveys wastewater to King County’s South Treatment plant in Renton for treatment and disposal.