S Bayside WWTP - Redwood City, California Wastewater Treatment Plant

S Bayside WWTP is a major wastewater treatment facility serving Redwood City and surrounding areas in San Mateo County, California. Operated by Silicon Valley Clean Water, the plant handles a population equivalent of over 211,000, placing it in the large agglomeration category under US regulatory frameworks. As a large municipal plant, S Bayside WWTP is subject to stringent National Pollutant Discharge Elimination System (NPDES) permits issued by the California State Water Resources Control Board. These permits require advanced treatment to protect the sensitive receiving waters of the San Francisco Bay, an ecologically important estuary. The plant's designed capacity is 1.00 million gallons per day, though actual flow may vary. The plant's treated effluent discharges into the San Francisco Bay, which connects to the Pacific Ocean via the Golden Gate. The Bay supports diverse aquatic life, including migratory fish species and extensive tidal wetlands. The plant's operations are critical to maintaining water quality in this urbanized estuary, which faces challenges from industrial runoff and urban pollution.

S Bayside WWTP discharges into the San Francisco Bay, a large estuary that drains into the Pacific Ocean. The Bay supports critical habitats for fish, birds, and marine mammals, including migratory species. The plant's location within 50 km of the coast means its effluent can influence coastal water quality, particularly during low-flow periods.