Sewer

Water used inside a home travels about 900 miles through sanitary sewer pipes to the Regional Wastewater Control Facility (RWCF) sewer treatment plant, where it is treated before it is released into local waterways.

Regional Wastewater Control Facility

• The RWCF has the capacity to treat 55 million gallons of sewage per day.
• The City of Stockton collects and treats an average of 33 million gallons of wastewater daily, from approximately 116,000 sewer connections in the City and nearby areas in the San Joaquin County.
• The RWCF cogeneration facility generates 17,600 kilowatts/year.
• The decomposition process for biosolids provides some of the energy for the engine generators.
• This onsite energy production supplies most of the plant's power needs.
• The RWCF three-stage treatment operations are closely regulated under the Wastewater National Pollutant Discharge Elimination System (NPDES) permit.
• The NPDES permit requires a Sewer System Management Plan (SSMP) to operate and maintain the treatment facility and procedures for Sanitary Sewer Overflows (SSOs). 

Wastewater Master Plan Update

• The 2022 Wastewater Master Plan Update (WWMPU) revised the 2008 Wastewater Master Plan in accordance with the Envision Stockton 2040 General Plan Update.
• The WWMPU includes the recalibration of the collections system hydraulic model to evaluate the existing wastewater collection system infrastructure, address potential impacts of planned development growth, and develop a comprehensive roadmap for the City’s wastewater collection system Municipal Utilities Department (MUD) Capital Improvement Plan.

External Links

• State Water Resources Control Board - Statewide General Discharge Order
• Environmental Protection Agency (EPA) - Dental Effluent Guidelines