Wilmington WWTP and Sewer System - Ohio Wastewater Treatment Plant

The Wilmington WWTP and Sewer System is a municipal wastewater treatment facility located in Wilmington, Clinton County, Ohio. It serves a population of around 11,921, classifying it as a small to medium agglomeration under US regulatory frameworks. As a US facility, 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. These permits set effluent limits to protect water quality. The plant discharges treated wastewater into local streams that flow into the Little Miami River watershed, which ultimately drains to the Ohio River. The receiving waters support diverse aquatic life and are used for recreation. Proper treatment helps maintain water quality in this ecologically sensitive region.

The plant discharges to tributaries of the Little Miami River, a National Scenic River that flows into the Ohio River. The watershed supports diverse aquatic species and provides recreational opportunities. Downstream, the Ohio River is a major drinking water source and habitat for fish and wildlife. Effective treatment is critical to prevent nutrient pollution and protect these ecosystems.