Tri Lakes RSD WWTP - Whitley County, Indiana Wastewater Treatment Plant

Tri Lakes RSD WWTP is a municipal wastewater treatment facility located in Whitley County, Indiana, serving a population of about 5,800. The plant is situated in a rural area near the town of Tri Lakes, providing essential sanitation services to the local community. As a US facility, the plant operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Indiana Department of Environmental Management. For a plant serving this population size, secondary treatment is typically required, with possible additional nutrient removal depending on the receiving water body's sensitivity. The treated effluent is discharged into local waterways that drain into the Upper Wabash River basin, ultimately reaching the Wabash River and then the Ohio River. The plant plays a key role in protecting downstream aquatic ecosystems and maintaining water quality in the region's lakes and streams.

The plant's discharge enters local streams that flow into the Upper Wabash River basin, part of the larger Mississippi River watershed. The area features numerous glacial lakes and wetlands that support diverse aquatic life, including fish species such as bass and bluegill. Protecting these waters from nutrient pollution is important to prevent algal blooms and maintain recreational uses.