Steubenville WWTP and Sewer System - Ohio Wastewater Treatment Plant

The Steubenville WWTP and Sewer System is a municipal wastewater treatment facility located in Steubenville, Ohio, along the Ohio River. Serving a population of about 19,015, the plant plays a key role in managing wastewater for this historic industrial city in Jefferson County. As a facility in the United States, the plant operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Ohio Environmental Protection Agency. For a population of this size, secondary treatment is typically required, with possible additional nutrient removal to protect downstream water quality. The plant's treated effluent is discharged into the Ohio River, which flows southwest to join the Mississippi River near Cairo, Illinois. The Ohio River supports diverse aquatic life and provides drinking water for millions. The plant's operations help maintain water quality in this ecologically and economically vital waterway.

The Steubenville WWTP discharges into the Ohio River, a major tributary of the Mississippi River system. The Ohio River watershed supports a variety of fish species and is an important migratory corridor for birds. Downstream, the river flows into the Mississippi River and eventually the Gulf of Mexico, where nutrient pollution contributes to a seasonal hypoxic zone. Effective treatment at plants like Steubenville helps reduce nutrient loads and protect downstream ecosystems.