Wastewater Treatment

The Wastewater Operations Division provides for the operation, maintenance, repair, and capital improvements of the Wastewater Treatment Plant and collection and discharge systems. The treatment plant operates under a National Pollutant Discharge Elimination System (NPDES) permit issued by the San Francisco Regional Water Quality Control Board and has a permitted dry weather capacity of 4.5 million gallons per day and a short-term hydraulic capacity of 24 million gallons per day.

There are over four hundred major plant process equipment components that endure a severe duty cycle including corrosive gases, abrasive liquids, and continuous operation. The collection system consists of 24 lift stations, approximately 150 miles of sewer pipelines, a 3-mile wet weather relief (interceptor) pipeline, and 6 wet weather control structures. The discharge system consists of a 1,100-foot long outfall pipeline and a 150-foot long outfall diffuser pipeline.

Additional responsibilities include the implementation of environmental programs mandated by enumerable state and federal statutes and an environmental laboratory providing process control and regulatory monitoring.

Sanitary Sewer Overflow (SSO) Reports