Marshall WWTP - Saline County, Missouri Wastewater Treatment Plant

Marshall WWTP is a municipal wastewater treatment facility located in Saline County, Missouri, serving a population of around 12,665. The plant is situated inland, away from coastal areas, and treats wastewater from the local community as part of the region's sanitation infrastructure. As a U.S. facility, Marshall WWTP operates under the Clean Water Act, administered by the U.S. EPA and likely permitted through the Missouri Department of Natural Resources. For a plant serving this population size, secondary treatment is typically required, with possible additional nutrient controls depending on the receiving water body's sensitivity. The treated effluent is discharged into a local waterway that ultimately drains into the Missouri River watershed, which flows into the Mississippi River and then to the Gulf of Mexico. This downstream connection highlights the plant's role in protecting water quality in a major river basin that supports diverse aquatic life and regional water resources.

The plant discharges into a tributary of the Missouri River, part of the vast Mississippi River basin that drains to the Gulf of Mexico. This watershed supports a range of aquatic species and is ecologically important for migratory fish and waterfowl. Nutrient management is critical in this region to prevent downstream hypoxia in the Gulf.