Mokane WWTP - Secondary Wastewater Treatment in Mokane, Missouri

Mokane WWTP is a municipal wastewater treatment plant located in Mokane, Missouri, a small community in Callaway County. The facility serves a population of 188, reflecting its role as a local-scale treatment system for this rural area. The plant provides secondary treatment, which is the standard level required by the U.S. Clean Water Act for municipal wastewater. Its designed capacity is 291.48 million gallons per year, and it currently discharges 113.56 million gallons annually. As a small facility, it operates under the National Pollutant Discharge Elimination System (NPDES) permit program, administered by the Missouri Department of Natural Resources. The treated effluent is discharged into a nearby water body that ultimately drains into the Missouri River watershed. This river system supports diverse aquatic life and provides water for downstream communities. The plant's operation helps protect local water quality and the ecological health of the region.

The plant discharges into a tributary of the Missouri River, which flows into the Mississippi River and eventually the Gulf of Mexico. The local watershed supports a mix of agricultural and natural habitats, with the Missouri River providing critical habitat for fish and migratory birds. Proper treatment is essential to prevent nutrient pollution that could contribute to hypoxia in the Gulf.