MILO WWTP - Advanced Wastewater Treatment in Milo, Iowa

MILO WWTP is a municipal wastewater treatment facility located on Elm Street in Milo, Warren County, Iowa. Serving a population of approximately 775, the plant provides advanced treatment to protect local water quality in this rural Midwestern community. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 919.85 thousand cubic meters per year and an actual discharge volume of 919.86 thousand cubic meters, the facility operates near full capacity. As a US plant, it is subject to the Clean Water Act and must comply with National Pollutant Discharge Elimination System (NPDES) permits issued by the Iowa Department of Natural Resources. The treated effluent is discharged into a local waterway that ultimately drains into the Des Moines River basin, a tributary of the Mississippi River. The plant's advanced treatment helps protect downstream aquatic ecosystems and supports the ecological health of the region's surface waters.

The plant discharges into a receiving water body within the Des Moines River watershed, which flows into the Mississippi River and eventually the Gulf of Mexico. This region is part of the Mississippi River basin, which supports diverse aquatic life and is an important migratory corridor for birds and fish. The advanced treatment helps reduce nutrient loading, which is critical for mitigating hypoxia in the Gulf of Mexico.