JO CO MILL CREEK REG WWTP - Overland Park, Kansas Wastewater Treatment Plant

JO CO MILL CREEK REG WWTP is a municipal wastewater treatment facility located in Overland Park, Johnson County, Kansas. Serving a population of around 77,980, the plant is a key component of the region's wastewater infrastructure, handling domestic and commercial flows from the suburban Kansas City area. As a US-based facility, the plant operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permitting, which sets effluent limits to protect water quality. For a plant of this scale, secondary treatment is typically required, and additional nutrient removal may be mandated depending on the receiving water body's sensitivity. The plant's treated effluent is discharged into local waterways that ultimately drain into the Missouri River watershed, part of the larger Mississippi River basin. This downstream connection supports diverse aquatic ecosystems and provides water for communities and agriculture. The plant's performance is critical to maintaining the ecological health of these receiving waters.

The plant discharges into streams within the Missouri River basin, which flows into the Mississippi River and eventually the Gulf of Mexico. This watershed supports a variety of fish and wildlife, including migratory birds and aquatic species. Nutrient loading from wastewater can contribute to downstream hypoxia in the Gulf, making effective treatment important for regional water quality.