Gaston WWTP - Advanced Wastewater Treatment in Gaston, Indiana

Gaston WWTP is a municipal wastewater treatment plant located in Gaston, Indiana, United States. The facility serves a small community of approximately 1,010 residents, reflecting its role in managing local domestic wastewater in this inland Midwestern town. The plant employs advanced treatment processes, exceeding the secondary treatment standard required by the U.S. Clean Water Act. With a design capacity of 757.08 cubic meters per day and a discharge volume matching that figure, the plant operates at full capacity. As a publicly owned treatment works (POTW), it is subject to National Pollutant Discharge Elimination System (NPDES) permitting under EPA and Indiana Department of Environmental Management oversight. The treated effluent is discharged into a local water body that ultimately drains into the Mississippi River basin, contributing to the overall water quality of the region. The advanced treatment level helps protect downstream aquatic ecosystems and supports the ecological health of the Wabash River watershed, which flows into the Ohio and Mississippi Rivers.

The plant discharges into a tributary of the Wabash River, which flows southwest through Indiana to the Ohio River and eventually the Mississippi River. The Wabash River watershed supports diverse aquatic life, including fish species such as bass and catfish, and provides habitat for migratory waterfowl. The advanced treatment helps reduce nutrient loading and protects downstream water quality in this agriculturally influenced region.