Crossnore WWTP - Secondary Treatment Plant in Avery County, North Carolina

Crossnore WWTP is a municipal wastewater treatment facility located in Avery County, North Carolina, United States. The plant serves a small community of 373 people, reflecting its role in a rural or small-town setting. It operates under the regulatory framework of the US Clean Water Act, which requires secondary treatment as the minimum standard for municipal wastewater plants. The plant employs secondary treatment, a biological process that removes organic matter and suspended solids. Its designed capacity is 264.98 volume units, with an actual discharge volume of 170.34 volume units, indicating operational headroom. As a US facility, it is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the state of North Carolina, ensuring compliance with water quality standards. The treated effluent is discharged into a local water body, likely a stream or river within the Upper Catawba River basin, which ultimately drains into the Atlantic Ocean via the Santee River system. The plant's operations help protect downstream aquatic ecosystems and maintain water quality in the region's sensitive mountain watersheds.

The plant discharges into a tributary of the Upper Catawba River, which flows through the Blue Ridge Mountains into Lake James and eventually the Atlantic Ocean. The surrounding watershed supports diverse aquatic life, including trout species, and is part of a region known for its ecological sensitivity. Protecting this water body from nutrient pollution is critical for maintaining water quality and habitat integrity.