ELMO WWTP - Secondary Wastewater Treatment Plant in Elmo, Missouri

ELMO WWTP is a municipal wastewater treatment facility located in Elmo, Missouri, a small community in Nodaway County. The plant serves a population of 166 residents and operates under secondary treatment standards, which is typical for small communities in the United States. The plant's designed capacity is 87.06 million gallons per year, with an actual discharge volume of 34.07 million gallons per year, indicating operational capacity well below design. As a US facility, it 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. The treated effluent is discharged into local waterways that ultimately drain into the Missouri River watershed. The plant plays a crucial role in protecting downstream water quality in this agricultural region, where maintaining low nutrient levels is important for preventing eutrophication in receiving waters.

The plant discharges into local streams that are part of the Missouri River basin, which flows into the Mississippi River and eventually the Gulf of Mexico. The region is predominantly agricultural, and the plant's secondary treatment helps reduce organic pollutants and nutrients that could contribute to hypoxia in the Gulf. The local watershed supports diverse aquatic life and is an important corridor for migratory birds.