Allen Co Westminster WWTP - Advanced Wastewater Treatment in Westminster, Ohio

Allen Co Westminster WWTP is a municipal wastewater treatment facility located on McPheron Road in Westminster, Ohio, within Allen County. The plant serves a small population of 315 residents, reflecting its role in a rural community. As an advanced treatment plant, it provides a higher level of pollutant removal than secondary treatment, ensuring compliance with stringent environmental standards. The plant's designed capacity is 227.12 volume units, with a current discharge volume of 151.42 volume units, indicating operational headroom. Under the U.S. Clean Water Act, such facilities operate under National Pollutant Discharge Elimination System (NPDES) permits issued by the Ohio Environmental Protection Agency, which set limits on effluent quality to protect receiving waters. The treated effluent is discharged into local waterways that ultimately drain into the Ohio River basin. The plant's advanced treatment helps safeguard downstream aquatic ecosystems and supports water quality in the region's watersheds.

The plant discharges into tributaries of the Ohio River, which flows into the Mississippi River and eventually the Gulf of Mexico. The local watershed supports diverse aquatic life and is part of a larger drainage network that influences nutrient loading in the Gulf. Advanced treatment at this plant reduces nutrient and pollutant loads, helping to mitigate downstream eutrophication and protect freshwater habitats.