Tulsa Southside WWT - Wastewater Treatment Plant in Tulsa, Oklahoma

Tulsa Southside WWT is a municipal wastewater treatment facility located in Tulsa, Oklahoma, serving a population of around 148,573. As part of the city's wastewater infrastructure, it handles a significant portion of the region's domestic and industrial sewage. The plant is situated in the Arkansas River basin, which ultimately drains into the Mississippi River system. Under the US Clean Water Act, plants of this scale are required to meet secondary treatment standards through National Pollutant Discharge Elimination System (NPDES) permits. These permits set limits on effluent quality to protect receiving waters. The facility likely employs biological treatment followed by disinfection to comply with federal and state regulations. The treated effluent is discharged into the Arkansas River, a major tributary of the Mississippi River. This waterway supports diverse aquatic life and is used for recreation and water supply downstream. The plant's operation is crucial for maintaining water quality in the Arkansas River and preventing nutrient pollution that could affect the Gulf of Mexico.

The plant discharges into the Arkansas River, which flows through Oklahoma and Arkansas before joining the Mississippi River. This river system supports a variety of fish species and provides habitat for migratory birds. Downstream, the Mississippi River carries nutrients to the Gulf of Mexico, where excess nitrogen and phosphorus can contribute to hypoxic zones. Effective treatment at Tulsa Southside helps reduce nutrient loading and protects both local and downstream ecosystems.