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

Hillsboro WWTP and Sewer System is a municipal wastewater treatment facility located in Hillsboro, Highland County, Ohio. The plant serves a population of about 6,368 residents, classifying it as a small to medium-sized agglomeration under US regulatory standards. As a US facility, the plant operates under the National Pollutant Discharge Elimination System (NPDES) permit program, which is part of the Clean Water Act. The Ohio Environmental Protection Agency (Ohio EPA) oversees permitting and compliance for wastewater facilities in the state. The plant's treated effluent is discharged into local streams that are part of the Ohio River basin. The Ohio River ultimately drains into the Mississippi River and then to the Gulf of Mexico. The surrounding region is predominantly rural and agricultural, with the plant playing a key role in protecting local water quality and downstream ecosystems.

The plant discharges into tributaries of the Ohio River, which flows into the Mississippi River and eventually reaches the Gulf of Mexico. The local watershed supports diverse aquatic life and is important for regional water quality. The plant's operations help protect downstream habitats from nutrient pollution and other contaminants common in agricultural areas.