San Clemente WRP Wastewater Treatment Plant, San Clemente, California

San Clemente WRP is a municipal wastewater treatment plant located at 378 Avenida Pico in San Clemente, Orange County, California. The plant serves a population of approximately 48,000 residents in this coastal community. As part of California's wastewater infrastructure, the facility plays a key role in managing the region's water resources. The plant operates under the regulatory framework of the US Clean Water Act, administered through the EPA's National Pollutant Discharge Elimination System (NPDES) permit program. California's State Water Resources Control Board and the Santa Ana Regional Water Quality Control Board oversee discharge permits for facilities of this scale. Plants serving populations of this size typically employ secondary or advanced treatment to meet stringent water quality standards. The treated effluent from San Clemente WRP is discharged into the local watershed, which ultimately drains to the Pacific Ocean. The facility's proximity to the coast (within 50 km) means its discharge can affect nearshore marine ecosystems. The plant contributes to protecting coastal water quality and supporting beneficial uses such as recreation and aquatic habitat.

The plant discharges into the San Juan Creek watershed, which flows through San Clemente and drains into the Pacific Ocean at the San Clemente State Beach area. This coastal environment supports diverse marine life, including kelp forests and rocky intertidal habitats. The receiving waters are part of the Southern California Bight, an ecologically productive region that provides nursery grounds for fish and supports migratory seabirds. Protecting water quality in this area is critical for maintaining healthy nearshore ecosystems and recreational uses.