Lafayette WWTP - Wastewater Treatment Plant in Lafayette, Indiana

Lafayette WWTP is a municipal wastewater treatment facility located in Lafayette, Indiana, serving an estimated population of 57,517. The plant is situated along the Wabash River, which flows through the city and provides the primary receiving water for treated effluent. As a facility serving a medium-sized agglomeration, the plant is subject to the U.S. Clean Water Act and operates under a National Pollutant Discharge Elimination System (NPDES) permit issued by the Indiana Department of Environmental Management. These permits set effluent limits to protect water quality and typically require secondary treatment as a minimum standard for municipal plants of this scale. The treated wastewater from Lafayette WWTP is discharged into the Wabash River, which flows southwest to join the Ohio River at the Indiana-Illinois border. The Ohio River then drains into the Mississippi River, ultimately reaching the Gulf of Mexico. The plant plays a key role in protecting the Wabash River's water quality, which supports diverse aquatic life and recreational uses.

The Wabash River is the primary receiving water body for Lafayette WWTP's treated effluent. The river flows through agricultural and urban areas before joining the Ohio River, which is a major tributary of the Mississippi River system. The watershed supports a variety of fish species and provides habitat for migratory birds. Downstream, the Ohio River is a critical drinking water source for millions of people and supports extensive commercial navigation. Protecting water quality in the Wabash River is essential for maintaining the ecological health of the larger Mississippi River basin.