Gilroy WWTF - Wastewater Treatment Plant in Gilroy, California, United States

Gilroy WWTF is a municipal wastewater treatment facility located in Gilroy, California, serving a population of about 95,000. The plant is situated in Santa Clara County, within the San Francisco Bay Area, and plays a key role in managing wastewater for this growing community. As a facility serving a medium-to-large agglomeration, Gilroy WWTF is subject to the US Clean Water Act and EPA National Pollutant Discharge Elimination System (NPDES) permitting. Treatment typically includes secondary or advanced processes to meet state and federal water quality standards, with oversight from the California Regional Water Quality Control Board. The plant's treated effluent is discharged to local water bodies that drain into the Pajaro River and eventually Monterey Bay, a marine ecosystem supporting diverse aquatic life. The facility's operations are critical for protecting downstream water quality and the ecological health of the bay.

Gilroy WWTF discharges treated wastewater into the Pajaro River watershed, which flows through agricultural lands and into Monterey Bay. The bay is an ecologically sensitive marine environment that supports diverse aquatic life, including fish, seabirds, and marine mammals. Protecting water quality in this watershed is essential for maintaining the health of the bay's ecosystem and its recreational and economic value.