Spencer Mountain WWTP - Secondary Treatment Plant in North Carolina

Spencer Mountain WWTP is a municipal wastewater treatment facility located in Spencer Mountain, Gaston County, North Carolina. The plant serves a small population of 321 residents, providing secondary treatment to meet Clean Water Act standards. The plant operates with a designed capacity of 189.27 cubic meters per day and currently treats an average daily flow of 94.64 cubic meters. As a secondary treatment facility, it uses biological processes to reduce organic matter and suspended solids before discharge. The plant is regulated under the US EPA National Pollutant Discharge Elimination System (NPDES) permit program, which sets effluent limits to protect water quality. The treated effluent is discharged into nearby streams that flow into the Catawba River basin, ultimately reaching the Atlantic Ocean via the Santee River system. The plant plays a key role in protecting local water quality in this inland watershed, supporting aquatic life and downstream recreational uses.

The plant discharges into small streams within the Catawba River basin, which flows through the Piedmont region of North Carolina. The Catawba River supports diverse aquatic species and provides drinking water for downstream communities. The watershed eventually drains into the Atlantic Ocean via the Santee River, making the plant's nutrient and pollutant removal important for both local and downstream ecosystems.