South Vienna WWTP and Sewer System - Ohio Wastewater Treatment Plant

The South Vienna WWTP and Sewer System is a municipal wastewater treatment facility located on West Main Street in South Vienna, Clark County, Ohio. Serving a small population of 469, the plant provides secondary treatment to meet state and federal water quality standards. As a secondary treatment plant, it uses biological processes to reduce organic matter and suspended solids before discharge. The plant has a designed capacity of 291.48 volume units and currently handles a daily flow of 280.12 volume units, operating near its capacity. Under the U.S. Clean Water Act, such facilities must comply with National Pollutant Discharge Elimination System (NPDES) permits issued by the Ohio Environmental Protection Agency. The treated effluent is discharged into local streams that drain into the Mad River watershed, ultimately reaching the Great Miami River and the Ohio River. This plant plays a key role in protecting downstream aquatic ecosystems and maintaining water quality in the region's surface waters.

The plant discharges into local tributaries of the Mad River, which flows into the Great Miami River and then the Ohio River. This watershed supports diverse aquatic life and provides drinking water for downstream communities. The plant's secondary treatment helps reduce nutrient loading and organic pollution, protecting the ecological health of these waterways.