Point Arena WWTF - Secondary Wastewater Treatment Plant in Point Arena, California

Point Arena WWTF is a municipal wastewater treatment facility located in Point Arena, Mendocino County, California. It serves a population of approximately 1,275 residents and operates as a secondary treatment plant, which is the standard level required by the US Clean Water Act for municipal discharges to surface waters. The plant's designed capacity is 719.23 million gallons per year, with an actual discharge volume of 681.37 million gallons per year, indicating it operates below its design capacity. As a secondary treatment facility, Point Arena WWTF uses biological processes to remove organic matter and suspended solids from wastewater. The plant is regulated under the National Pollutant Discharge Elimination System (NPDES) permit program, administered by the California State Water Resources Control Board. Secondary treatment is appropriate for a community of this size and ensures compliance with federal water quality standards. The plant's proximity to the Pacific Ocean (within 10 km) means its treated effluent ultimately reaches the marine environment. The receiving water body is likely a local creek or direct ocean outfall, contributing to the coastal ecosystem. The facility plays a key role in protecting the scenic and ecologically sensitive coastline of Northern California, supporting marine life and recreational water quality.

Point Arena WWTF discharges treated wastewater into the Pacific Ocean via a local watercourse or outfall. The plant is situated in a coastal watershed that drains directly to the ocean, supporting a diverse marine ecosystem including fish, seabirds, and marine mammals. The area is known for its rocky coastline and kelp forests, which are sensitive to nutrient loading and pollution. Proper treatment is essential to maintain water quality and protect the ecological health of the coastal zone.