Westport STF - Secondary Wastewater Treatment Plant in Mendocino County, California

Westport STF is a municipal wastewater treatment plant located in Mendocino County, California, serving a small population of 285 residents. The facility operates secondary treatment, which is the standard level required under the U.S. Clean Water Act for most municipal plants to reduce organic matter and suspended solids before discharge. The plant has a designed capacity of 109.78 million gallons per year and currently treats an annual discharge volume of 94.64 million gallons. As a secondary treatment facility, it meets the effluent limits set by the National Pollutant Discharge Elimination System (NPDES) permit program, which regulates discharges into U.S. waters. The treated effluent from Westport STF ultimately reaches the Pacific Ocean, given its coastal location in Mendocino County. The plant's discharge contributes to the local watershed that drains into the ocean, supporting marine ecosystems along the Northern California coast. The area is known for its rugged coastline and diverse aquatic life, including salmon and other sensitive species.

Westport STF discharges into the Pacific Ocean via local coastal streams in Mendocino County. The receiving waters support a diverse marine ecosystem, including kelp forests, rocky intertidal zones, and migratory fish species such as salmon and steelhead. The plant's coastal location requires careful management to protect water quality and marine habitats from nutrient loading and other pollutants.