Valencia WRP Wastewater Treatment Plant, Los Angeles County, California

Valencia WRP is a municipal wastewater treatment plant located in Los Angeles County, California, serving a population of approximately 163,000. The facility is situated in the Santa Clarita Valley, north of Los Angeles, and plays a key role in managing wastewater from the Valencia area. As a plant serving over 150,000 people, Valencia WRP is classified as a large agglomeration under US regulatory frameworks. It operates under the US Clean Water Act, which requires National Pollutant Discharge Elimination System (NPDES) permits for all discharges to surface waters. The plant's designed capacity is 1.00 million gallons per day, indicating it is sized to handle the community's wastewater flows. The treated effluent from Valencia WRP is discharged to the Santa Clara River, which flows southwest through Ventura County and empties into the Pacific Ocean near Oxnard. The Santa Clara River is one of the last free-flowing rivers in Southern California, supporting diverse aquatic habitats and migratory bird species. The plant's discharge must meet stringent water quality standards to protect this ecologically important river system.

Valencia WRP discharges to the Santa Clara River, which flows through Ventura County and drains into the Pacific Ocean at the Santa Clara River Estuary. The river supports a variety of sensitive aquatic species, including the endangered Southern California steelhead trout. The estuary provides critical habitat for migratory birds and marine life. The plant's operations are subject to strict discharge limits to protect this downstream ecosystem.