Marengo WWTP - Advanced Wastewater Treatment in Marengo, Indiana

Marengo WWTP is a municipal wastewater treatment plant located in Marengo, Crawford County, Indiana. Serving a population of 829, the facility provides advanced treatment to protect local water quality in this rural community. The plant operates under the US Clean Water Act, which requires NPDES permits for all point source discharges. With advanced treatment, the facility goes beyond secondary standards to remove nutrients and other pollutants, meeting stringent environmental requirements for its scale. The treated effluent from Marengo WWTP discharges into local waterways that drain into the Ohio River basin. This region supports diverse aquatic life and recreational uses, making advanced treatment essential for maintaining downstream water quality.

The plant discharges into tributaries of the Ohio River, which flows into the Mississippi River and ultimately the Gulf of Mexico. This watershed supports diverse aquatic ecosystems and is important for regional biodiversity. Advanced treatment helps reduce nutrient loading that could contribute to downstream hypoxia zones.