Circleville WWTP and Sewer System | Circleville, Ohio Wastewater Treatment Plant

The Circleville WWTP and Sewer System is a municipal wastewater treatment facility located at 688 East Main Street in Circleville, Ohio, within Pickaway County. Serving a population of about 13,485, the plant is part of the city's essential infrastructure for managing domestic wastewater from the community. As a medium-sized agglomeration, the plant is subject to the U.S. Clean Water Act and National Pollutant Discharge Elimination System (NPDES) permitting requirements. Facilities of this scale typically employ secondary treatment to meet effluent standards before discharge. The plant's treated effluent is discharged into receiving waters that ultimately flow into the Scioto River, a major tributary of the Ohio River. This watershed supports diverse aquatic life and provides drinking water for downstream communities. The plant's operation is critical for protecting water quality in the Scioto River basin and the broader Ohio River ecosystem.

The Circleville WWTP discharges into local streams that feed the Scioto River, which flows south to join the Ohio River at Portsmouth. The Scioto River watershed supports a variety of fish species and provides habitat for migratory birds. Downstream, the Ohio River is a major drinking water source and supports extensive aquatic biodiversity. The plant's effluent quality directly affects these ecosystems, making proper treatment essential for maintaining ecological health.