ECWandSA_JOHNSTON PLANT 1 Wastewater Treatment Facility, Johnston, South Carolina

ECWandSA_JOHNSTON PLANT 1 is a municipal wastewater treatment facility located on Sertoma Drive in Johnston, South Carolina. Serving an estimated population of 6,500, the plant is part of the region's wastewater infrastructure managed by the Edgefield County area. As a small to medium-sized agglomeration, it plays a key role in protecting local water quality. The plant operates under the US Clean Water Act, which requires National Pollutant Discharge Elimination System (NPDES) permits for all point source discharges. For facilities of this scale, secondary treatment is typically mandated to reduce organic pollutants and suspended solids. The South Carolina Department of Health and Environmental Control (DHEC) oversees permitting and compliance within the state. Treated effluent from the plant is discharged into a receiving water body that ultimately drains into the Savannah River basin. This watershed supports diverse aquatic life and provides drinking water for downstream communities. Proper treatment at this facility helps maintain the ecological health of the region's waterways.

The plant discharges into a local waterway that flows into the Savannah River basin, which eventually reaches the Atlantic Ocean. This watershed supports a variety of fish and wildlife species, including several that are ecologically sensitive. Maintaining effective treatment at this facility is important for preserving water quality in the downstream environment.