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Public Works - Sewer Utility Division
614 Division Street, Port Orchard, WA  MS-27
Phone:(360)337-5777 * Fax:(360)337-5678






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Suquamish Sewage Treatment Plant

Suquamish Wastewater Treatment Facility

The primary source of wastewater to the Suquamish Treatment Plant is domestic sewage from residential and light commercial activities in the town of Suquamish, and the Clearwater Hotel and Resort Casino.

The treatment plant effluent is discharged into Port Madison Bay, Puget Sound. The effluent is discharged approximately 2,300 feet offshore at a depth of 43 feet below mean low water.

Design Capacity
Average flow for the maximum month 0.40 million gallons per day
Influent BOD5 loading for the maximum month 651 pounds per day
Influent TSS loading for the maximum month 751 pounds per day

[ Flow Process Diagram ]

Key Facts:

  • Treated 89.1 million gallons of sewage in 2013
  • The average daily flow in 2015 was 244,000 gallons of sewage
  • Removed 98 percent of the suspended solids and 98 percent of the Biochemical Oxygen Demand (BOD) before discharging the effluent into Puget Sound
  • 434,000 gallons of sludge (69 dry tons of Biosolids) were transported by truck to the Central Kitsap Treatment Plant for further processing

[ Map of Public Works Sewage Treatment Facilities ]

Kitsap County Public Works
Sewer Utility Division
(360) 337-5777 or (800) 825-4940

Updated:  June 01, 2016

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