Morrison WWTP - Secondary Wastewater Treatment in Morrison, Missouri

Morrison WWTP is a municipal wastewater treatment facility located in Morrison, Gasconade County, Missouri. The plant serves a small population of 139 residents, reflecting its role in a rural community. It operates under the regulatory framework of the U.S. Clean Water Act, which requires secondary treatment for municipal discharges. The plant provides secondary treatment, a standard level for small communities in the United States. Its designed capacity is 56.78 units, with an average daily discharge of 37.85 units, indicating operational headroom. As a U.S. facility, it is subject to National Pollutant Discharge Elimination System (NPDES) permitting, which sets effluent limits to protect water quality. The treated effluent is discharged into a local water body that ultimately drains into the Missouri River watershed. This river system flows into the Mississippi River, supporting diverse aquatic life and providing water resources for downstream communities. The plant's discharge contributes to the overall water quality management in the region.

The plant's discharge enters a tributary of the Missouri River, 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 freshwater mussels. The secondary treatment process helps reduce organic pollutants and suspended solids, protecting downstream aquatic habitats from nutrient enrichment and oxygen depletion.