Lewistown WWTP - Secondary Treatment Plant in Lewistown, Missouri

Lewistown WWTP is a municipal wastewater treatment plant located in Lewistown, Missouri, United States. The facility serves a small population of 534 residents, reflecting the rural character of the area. 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. Its designed capacity is 283.91 million gallons per year, and the actual discharge volume is 143.85 million gallons per year, indicating moderate utilization. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The treated effluent is discharged into a local water body, likely a stream or river within the Mississippi River basin. The plant plays a key role in protecting local water quality and downstream ecosystems, including the Mississippi River and the Gulf of Mexico. Proper treatment helps prevent nutrient pollution and supports aquatic life in the region.

The plant discharges into a receiving water body that is part of the Mississippi River watershed, ultimately draining into the Gulf of Mexico. This region supports diverse aquatic life and is an important migratory corridor for birds and fish. The plant's secondary treatment helps reduce nutrient loads, which is critical for mitigating hypoxia in the Gulf of Mexico.