West Alexandria WWTP and Sewer System - Preble County, Ohio Wastewater Treatment

The West Alexandria WWTP and Sewer System is a municipal wastewater treatment facility located in Preble County, Ohio, United States. It serves a small community of approximately 1,395 residents, reflecting its role in managing local wastewater for this rural area. The plant provides advanced treatment, which goes beyond the secondary treatment standard required by the US Clean Water Act. With a designed capacity of 1,135.62 and a discharge volume of 548.89, the facility operates under the National Pollutant Discharge Elimination System (NPDES) permit program, which sets effluent limits to protect water quality. The treated effluent is discharged into a local water body that ultimately drains into the Ohio River basin, contributing to the overall water quality of the region. The plant's advanced treatment helps minimize nutrient and pollutant loads, supporting aquatic life and downstream uses in the Mississippi River watershed.

The plant discharges into a tributary of the Great Miami River, which flows into the Ohio River and eventually the Mississippi River. This watershed supports diverse aquatic habitats and is important for regional water supply and recreation. The advanced treatment level helps reduce nutrient pollution, protecting downstream ecosystems from eutrophication.