Welcome to Sammamish Plateau Water and Sewer District
The Sammamish Plateau Water and Sewer District serves approximately 16,300 water customers and 10,100 sewer customers with a population base of over 50,000. The District is located east of Lake Sammamish, 15 miles east of the City of Seattle, 6 miles east of the City of Redmond's commercial core, and immediately north of the City of Issaquah. The District serves portions of the Cities of Sammamish and Issaquah, and areas of unincorporated King County. The District has been supplying services to its customers for over 60 years.
Sammamish Water District Fights Issaquah's Attempt to Inject Polluted Runoff into Drinking Water Aquifer