Darke Co Rolin Acres WWTP - Advanced Wastewater Treatment in Greenville, Ohio

Darke Co Rolin Acres WWTP is a municipal wastewater treatment facility located in Greenville, Ohio, within Darke County. The plant serves a small population of 173 residents, reflecting its role in a rural community. As part of the United States' wastewater infrastructure, it operates under the Clean Water Act, which governs discharge standards through the National Pollutant Discharge Elimination System (NPDES). The plant provides advanced treatment, indicating a high level of pollutant removal beyond secondary standards. It has a designed capacity of 90.85 m³/day and currently discharges 94.64 m³/day of treated wastewater. This suggests the facility is operating near its design capacity, typical for small plants serving stable populations. The treated effluent is discharged into a local water body within the Great Miami River watershed, which flows into the Ohio River and ultimately the Mississippi River system. The plant's advanced treatment helps protect downstream water quality in this agriculturally intensive region, supporting aquatic life and recreational uses.

The plant discharges into a tributary of the Great Miami River, which flows through western Ohio before joining the Ohio River. The Great Miami River watershed supports diverse aquatic habitats and is a source for drinking water and recreation. Downstream, the Ohio River feeds into the Mississippi River, impacting a vast ecological network. The advanced treatment level helps mitigate nutrient loading and protects sensitive species in these waters.