Knox City WWTP - Secondary Treatment Plant in Knox County, Missouri

Knox City WWTP is a municipal wastewater treatment facility located in Knox County, Missouri, United States. The plant serves a small population of around 223 residents, reflecting its role in a rural community. It operates under the regulatory framework of the US Clean Water Act, which governs wastewater discharges through the National Pollutant Discharge Elimination System (NPDES) permit program. The plant provides secondary treatment, a standard level for small communities in the US, which typically involves biological processes to reduce organic matter and suspended solids. The designed capacity of 105.99 million gallons per year indicates the plant's potential to handle higher flows, while the actual discharge volume of 22.71 million gallons per year suggests current usage is well below capacity. The treated effluent is discharged into a local water body, likely a stream or river within the Mississippi River basin, as Knox County lies in the watershed of the Mississippi River. The plant's operations help protect downstream water quality and aquatic habitats in this major river system, which ultimately drains into the Gulf of Mexico.

The plant discharges into a local water body that is part of the Mississippi River basin, one of the largest drainage systems in North America. The Mississippi River flows into the Gulf of Mexico, where nutrient pollution from upstream sources contributes to seasonal hypoxic zones. The plant's secondary treatment reduces organic pollutants and helps mitigate local impacts on small streams and rivers in the region.