Butler WWTP - Neelyville, Missouri Wastewater Treatment Plant

Butler WWTP is a municipal wastewater treatment facility located on Center Street in Neelyville, Missouri, within Butler County. The plant serves a population of about 4,219 people, reflecting a small to medium-sized community in the southeastern part of the state. As a publicly owned treatment works, it plays a key role in managing local wastewater and protecting public health. However, as a facility serving fewer than 10,000 people, it falls under the U.S. Clean Water Act's secondary treatment standards, which are enforced through National Pollutant Discharge Elimination System (NPDES) permits issued by the Missouri Department of Natural Resources. These permits set effluent limits to ensure treated water meets quality criteria before discharge. The treated effluent from Butler WWTP is discharged into a local water body that ultimately drains into the Mississippi River watershed. The Mississippi River system supports diverse aquatic life and provides drinking water for millions downstream. Proper treatment at plants like Butler WWTP is essential to reduce nutrient and pollutant loads entering this major river system.

Butler WWTP discharges into a receiving water body within the Mississippi River basin. The Mississippi River flows southward to the Gulf of Mexico, supporting a vast network of wetlands, floodplains, and aquatic habitats. Downstream, nutrient pollution from wastewater can contribute to hypoxic zones in the Gulf, making effective treatment critical for maintaining water quality and ecosystem health in this nationally significant watershed.