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Drinking Water Rates - Commercial

  • 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 adjusting drinking water rates during 2012-2014 to pay for investments in the water supply system. Seattle water still costs less than a penny per gallon even with the rate increase. 2014 rates were approved by the City Council in November 2011. As of January 1, 2014, the average increase is 7.0% for residential and 10.0% for commercial.

Water rates pay for:

  • Protecting the safety and security of the water supply system
  • Operating two state-of-the-art water treatment facilities
  • Daily testing to maintain drinking water quality
  • Covering open water storage reservoirs in Seattle
  • Maintaining and repairing 1,800 miles of pipeline, 20,000 valves, 18,000 fire hydrants, 180,000 water service connections, and dozens of other water facilities
  • Providing services to help customers manage their bills and resolve problems

Bill comparisons

Estimated Monthly Bill Increase for Typical Customers201220132014
Small Restaurant (19 ccf per month)$9.18$10.03$10.76
Convenience Store (20 ccf per month)$9.38$10.26$11.00
Large Restaurant (254 ccf per month)$114.15$124.69$133.87
Downtown Hotel (662 ccf per month)$293.21$320.29$343.88

* one ccf = 100 cubic feet = 748 gallons

Related links

Water Service Standard Charges