Chillicothe WWTP and Sewer System | Wastewater Treatment in Chillicothe, Ohio

Chillicothe WWTP and Sewer System is a municipal wastewater treatment facility serving the city of Chillicothe, Ohio, United States. The plant handles wastewater from a population of about 21,796, placing it in the medium-agglomeration category for US facilities. Under the US Clean Water Act, plants of this scale are typically required to meet secondary treatment standards through National Pollutant Discharge Elimination System (NPDES) permits issued by the Ohio Environmental Protection Agency. These permits set effluent limits for biochemical oxygen demand, total suspended solids, and other parameters to protect water quality. The plant's treated effluent is discharged into receiving waters that flow into the Scioto River, a major tributary of the Ohio River. The Scioto River supports diverse aquatic life and provides recreational opportunities. Downstream, the Ohio River drains into the Mississippi River, ultimately reaching the Gulf of Mexico, making the plant's performance important for regional water quality.

The plant discharges into local streams that are part of the Scioto River watershed. The Scioto River flows south through Ohio to join the Ohio River at Portsmouth. This river system supports a variety of fish species and provides habitat for migratory birds. The Ohio River is a major drinking water source for millions of people, so effective wastewater treatment is critical to prevent nutrient pollution and protect downstream ecosystems.