Dearborn WWTP - Secondary Wastewater Treatment in Dearborn, Missouri

Dearborn WWTP is a municipal wastewater treatment plant located in Dearborn, Buchanan County, Missouri, United States. The facility serves a small population of 496 residents, reflecting its role in a rural community. The plant is situated at 18682 MO Y, Dearborn, and 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. With a designed capacity of 378.54 megaliters per year and an actual discharge volume of 211.98 megaliters per year, the plant operates below its capacity, indicating room for future growth or seasonal variations. The treated effluent is discharged into a local water body, likely a stream or river within the Missouri River basin. The plant's inland location, over 50 km from the coast, means its discharge contributes to freshwater ecosystems rather than marine environments. The plant plays a key role in protecting local water quality and public health in the Dearborn area.

The plant discharges into a receiving water body within the Missouri River watershed, which ultimately flows into the Mississippi River and then the Gulf of Mexico. The local watershed supports diverse aquatic life and is important for regional agriculture and recreation. The plant's secondary treatment helps reduce nutrient loading, which is critical for preventing downstream eutrophication in the Gulf of Mexico's hypoxic zone.