West Lebanon WWTP | Warren County, Indiana Wastewater Treatment Plant

West Lebanon WWTP is a municipal wastewater treatment plant located in Warren County, Indiana, serving a small community of approximately 946 residents. The facility is situated in the Wabash River watershed, an inland region of the Midwestern United States. The plant provides secondary treatment, which is the standard level required by the U.S. Clean Water Act for municipal facilities of this scale. Secondary treatment typically involves biological processes to remove organic matter and suspended solids. The plant's designed capacity is 416.39 million gallons per year, and it currently discharges 416.40 million gallons annually, indicating near-full utilization. Treated effluent is discharged into local waterways that ultimately drain into the Wabash River, a major tributary of the Ohio River and part of the Mississippi River basin. The plant plays a key role in protecting local water quality and supporting aquatic life in the surrounding agricultural landscape.

The plant discharges into the Wabash River watershed, which flows into the Ohio River and then the Mississippi River, eventually reaching the Gulf of Mexico. This inland basin supports diverse aquatic species and is important for regional agriculture. The plant's secondary treatment helps reduce nutrient loads that could contribute to downstream hypoxia in the Gulf.