The Wastewater Division is a critical component in keeping Puget Sound Clean through the proper operation of the wastewater conveyance and treatment systems.

Treatment Plants
The wastewater system is comprised of 2 wastewater treatment plants, 37 sewage pump stations and one hundred and 44 grinder pump stations.

The Westside Wastewater Treatment Plant serves the entire City of Bremerton. It began operating in 1985, and provides full secondary biological treatment with 15.5 million gallons per day (MGD) capacity.

The Eastside Combined Sewer Overflow (CSO)Treatment Plant began operating in 2001. The Eastside Plant serves East Bremerton when flows become too great for the conveyance systems to handle. The plant provides high-rate treatment of combined sewage (stormwater and sanitary), and has a peak capacity of 15 million gallons per day (MGD). The plant normally operates 10 times per year.

The older portions of the city's sewer conveyance systems were designed to convey both wastewater and stormwater and during periods of heavy rainfall these systems would relieve themselves through multiple combined sewer overflow (CSO) sites. The City completed a concerted effort to reduce these CSOs to meet the stringent requirements of the WA Department of Ecology. The CSO events have been reduced by over 99% and led to the reopening of the shellfish harvest areas in Dyes Inlet.

Award-Winning Operations
The Wastewater Division staff has been the recipient of many awards by the Washington State Department of Ecology. They were first awarded the "Outstanding Performance Award" in 1999, and then subsequently from 2005 thru 2013. The Westside Plant has an accredited laboratory through the WA Department of Ecology, and analyzes samples for both treatment plants. The Wastewater Division is staffed with 18 full-time employees, who operate and maintain both treatment plants and sewage pump stations.