New Vienna WWTP and Sewer System - Secondary Treatment in Ohio

The New Vienna WWTP and Sewer System is a municipal wastewater treatment facility located in New Vienna, Ohio, United States. It serves a population of approximately 1,100 residents in this rural community within Clinton County. The plant operates under the regulatory framework of the US Clean Water Act, which requires secondary treatment for municipal discharges. The facility provides secondary treatment, a standard level for small communities in the United States. Its designed capacity is 321.76 m³/day, with an average daily discharge volume of 302.83 m³/day, indicating near-capacity operation. As a US plant, it operates under an NPDES permit issued by the Ohio Environmental Protection Agency, ensuring compliance with effluent limits. The treated effluent is discharged into a local waterway that ultimately drains into the Ohio River basin. The plant plays a key role in protecting local streams and groundwater from untreated sewage, supporting aquatic life and downstream water quality in the region.

The plant discharges into a tributary of the Ohio River watershed, which flows into the Mississippi River and eventually the Gulf of Mexico. The local streams support diverse aquatic life and are important for recreational use. Protecting these waters from nutrient pollution and pathogens is critical for maintaining ecosystem health and downstream water quality.