Riverdale Mills W and S District Wastewater Treatment Plant, Enoree, South Carolina

Riverdale Mills W and S District is a wastewater treatment plant located in Enoree, South Carolina, serving a small community of 599 residents. The facility is situated in Spartanburg County, part of the upstate region of the state, and is operated as a municipal wastewater utility. The plant provides secondary treatment, which is the standard level required by the U.S. Clean Water Act for municipal wastewater facilities. Under the National Pollutant Discharge Elimination System (NPDES), plants of this scale must meet effluent limits for biochemical oxygen demand and total suspended solids. The treated effluent is discharged into local surface waters that ultimately drain into the Broad River basin, a tributary of the Santee River system. This watershed supports diverse aquatic life and provides drinking water for downstream communities. The plant's location inland, away from coastal zones, reduces direct marine impact, but its discharge contributes to the overall water quality of the region's freshwater ecosystems.

The plant discharges into the Broad River watershed, which flows into the Santee River and eventually reaches the Atlantic Ocean via the Santee Delta. This basin supports a variety of fish species and provides habitat for migratory birds. The region's Piedmont geography means streams are relatively fast-flowing, aiding in natural reaeration and dilution of treated effluent.