CHESTER SANDY R STP - Wastewater Treatment Plant in Chester County, South Carolina

CHESTER SANDY R STP is a municipal wastewater treatment facility located in Chester County, South Carolina, serving a population of about 9,968. The plant is situated near the Sandy River, a tributary of the Broad River, which flows into the Congaree River and ultimately the Atlantic Ocean via the Santee River system. As a U.S. facility, the plant operates under the National Pollutant Discharge Elimination System (NPDES) permit program, which mandates secondary treatment as a minimum standard for municipal plants. For a plant serving approximately 10,000 people, typical treatment includes biological processes such as activated sludge or trickling filters, followed by disinfection before discharge. The plant's discharge enters the Sandy River, which supports diverse aquatic life and is part of the larger Santee River basin. The downstream environment includes the Broad River and Congaree National Park, an ecologically significant floodplain forest. Proper treatment is essential to protect water quality and aquatic habitats in this region.

The plant discharges into the Sandy River, a tributary of the Broad River, which flows into the Congaree River and then the Santee River, ultimately reaching the Atlantic Ocean. The Sandy River watershed supports diverse aquatic species and is part of a larger river system that includes ecologically sensitive floodplain forests. Maintaining water quality is critical for downstream ecosystems and recreational uses.