Marin Co SD 5 WWTF - Tiburon, California Wastewater Treatment Plant

Marin Co SD 5 WWTF is a municipal wastewater treatment facility located in Tiburon, Marin County, California, serving a population of about 6,849. The plant is situated on the San Francisco Bay, a major estuary on the Pacific coast of the United States. As a facility in the United States, the plant operates under the Clean Water Act, administered by the EPA and the California State Water Resources Control Board. Plants of this scale typically provide secondary or advanced treatment to meet National Pollutant Discharge Elimination System (NPDES) permit requirements, ensuring protection of the receiving water body. The treated effluent is discharged into the San Francisco Bay, which is part of the larger San Francisco Bay-Delta estuary. This ecosystem supports diverse aquatic life, including fish, birds, and marine mammals, and is a vital migratory corridor for Pacific salmon and other species. The plant's operations are crucial for maintaining water quality in this ecologically sensitive region.

The plant discharges into the San Francisco Bay, which connects to the Pacific Ocean through the Golden Gate. The Bay is a highly productive estuary that supports a wide range of habitats, including tidal marshes, mudflats, and eelgrass beds. It is home to numerous species of fish, birds, and invertebrates, and serves as a critical stopover for migratory waterfowl along the Pacific Flyway. The health of the Bay is influenced by nutrient loads and pollutants from surrounding urban areas, making effective wastewater treatment essential for preserving water quality and ecosystem function.