Lone Grove South WWT - Secondary Wastewater Treatment in Lone Grove, Oklahoma

Lone Grove South WWT is a municipal wastewater treatment facility located in Lone Grove, Carter County, Oklahoma, United States. The plant serves a population of approximately 1,438 residents, classifying it as a small-scale treatment facility within the state's wastewater infrastructure. The plant provides secondary treatment, which is the standard level required by the U.S. Clean Water Act for municipal wastewater facilities. Secondary treatment typically involves biological processes to remove organic matter and suspended solids. The plant has a designed capacity of 776.01 units and currently discharges 567.81 units, indicating operational headroom. The treated effluent is discharged into local waterways that eventually drain into the Red River basin, contributing to the larger Mississippi River watershed. The plant's operations are subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Oklahoma Department of Environmental Quality, ensuring compliance with federal water quality standards.

The plant discharges into tributaries of the Red River, which flows south to the Gulf of Mexico. The local watershed supports diverse aquatic life and is part of the larger Mississippi River drainage basin. The region's semi-arid climate and agricultural land use make water quality management important for downstream ecosystems.