Suquamish Wastewater Treatment Plant

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 new 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 80 million gallons of wastewater in 2009
• The average daily flow in 2009 was 221,000 gallons of wastewater
• Removed 97 percent of the suspended solids and 97 percent of the Biochemical Oxygen Demand (BOD) before discharging the effluent into Puget Sound
• 560,000 gallons of sludge (71 dry tons of Biosolids) were transported by truck to the Central Kitsap Treatment Plant for further processing

[ Map of Public Works Waste Treatment Facilities ]

Kitsap County Public Works
Waste Water Division
(360) 337-5777 or (800) 825-4940
Kitsap1@co.kitsap.wa.us