BYRON SAN DIS WWTF - Secondary Wastewater Treatment Plant in Oakley, California

BYRON SAN DIS WWTF is a municipal wastewater treatment facility located in Oakley, California, within Contra Costa County. The plant serves a small population of 900 residents and operates under secondary treatment standards, which is the minimum required by the US Clean Water Act for municipal wastewater. Its designed capacity is 151.42 volume units, with an average daily discharge of 136.28 volume units, indicating a utilization rate near 90%. The plant's secondary treatment process typically involves biological treatment followed by sedimentation, effectively reducing organic matter and suspended solids. As a facility in the United States, it operates under the National Pollutant Discharge Elimination System (NPDES) permit program, which sets effluent limits to protect water quality. The plant's compliance with these permits ensures that its discharge meets federal and state standards. The treated effluent from BYRON SAN DIS WWTF is discharged into a local water body that ultimately drains into the San Francisco Bay and the Pacific Ocean. The plant plays a crucial role in protecting the sensitive estuarine environment of the Delta and Bay, which supports diverse aquatic life and is an important ecological and economic resource for the region.

The plant's discharge enters a tributary of the Sacramento-San Joaquin River Delta, which flows into San Francisco Bay and then the Pacific Ocean. The Delta and Bay are ecologically sensitive areas that support a wide range of fish, birds, and other wildlife, including several threatened and endangered species. The plant's secondary treatment helps reduce nutrient and pollutant loads to this vital estuarine ecosystem.