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Drinking Water Rates

  • Chester Morse Lake is part of the 90,000-acre Cedar River Watershed - a protected source of water in the foothills of the Cascade Mountains.
  • The watersheds that provide our drinking water are protected and monitored for anything that could threaten water quality.
  • The water supply from the South Fork of the Tolt River is part of the 12,500-acre Tolt River Watershed - including 8,400 acres of protected, City-owned land.
  • The Tolt Water Treatment Facility uses filtration and ozonation to provide high quality drinking water to about 450,000 people in King County.
  • The Cedar Water Treatment Facility uses ozonation and ultraviolet light (UV) disinfection to provide high quality drinking water to about 850,000 people in King County.
  • Water operations staff are at work 24 hours a day to ensure a dependable, safe drinking water supply.
  • Seattle’s water quality laboratory conducts sampling and testing of the water supply every day of the year.
  • The Beacon Hill Reservoir is one of eight water reservoirs covered during the last 15 years to protect the water supply – providing the added benefit of new park land.
  • Water crews maintain 1,800 miles of pipelines, 18,000 fire hydrants, and many other water facilities in Seattle and King County.
  • About 1.3 million people in King County depend on Seattle to provide their drinking water.

Seattle Public Utilities is increasing water rates by approximately 1.7% for 2016. Seattle water still costs less than a penny per gallon.

Water rates pay for:

Related links

Water Service Standard Charges