Allenville WWTP - Secondary Treatment Plant in Allenville, Missouri

Allenville WWTP is a municipal wastewater treatment facility located in Allenville, Missouri, a small community in Cape Girardeau County. The plant serves a population of 241 residents, classifying it as a small-scale facility within the state's wastewater infrastructure. The plant provides secondary treatment, which is the standard level required by the US Clean Water Act for municipal wastewater. Secondary treatment typically involves biological processes to remove organic matter and suspended solids. The plant has a designed capacity of 79.49 megaliters per year and discharges a similar volume, indicating full utilization of its capacity. The treated effluent is discharged into a local water body that ultimately drains into the Mississippi River basin. The Mississippi River is a major ecological corridor supporting diverse aquatic life and providing drinking water for millions. The plant's operations are regulated under the National Pollutant Discharge Elimination System (NPDES) permit program, ensuring compliance with water quality standards.

The plant discharges into a receiving water body within the Mississippi River basin, one of the largest river systems in North America. The Mississippi River supports a wide range of fish species and migratory birds, and its floodplains provide critical habitat. Downstream, the river flows into the Gulf of Mexico, where nutrient pollution from upstream sources can contribute to hypoxic zones. The plant's secondary treatment helps reduce organic pollutants, but nutrient removal may be limited without tertiary processes.