Tremont STP - Secondary Wastewater Treatment Plant in Tremont, Illinois

Tremont STP is a municipal wastewater treatment facility located in Tremont, Illinois, United States. The plant serves a population of approximately 2,109 residents and operates under secondary treatment standards as required by the US Clean Water Act. The plant's designed capacity is 832.79 million gallons per year, with an average discharge volume of 794.94 million gallons per year. As a secondary treatment facility, it utilizes biological processes to reduce organic matter and suspended solids before discharging treated effluent. The plant is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Illinois Environmental Protection Agency, which set effluent limits to protect water quality. The treated wastewater from Tremont STP is discharged into a local waterway that ultimately drains into the Illinois River basin. The Illinois River flows into the Mississippi River, which empties into the Gulf of Mexico. The plant's operations help protect downstream aquatic ecosystems and support the overall health of the Mississippi River watershed.

Tremont STP discharges into a tributary of the Illinois River, which flows into the Mississippi River and eventually reaches the Gulf of Mexico. The Illinois River basin supports diverse aquatic life, including fish and migratory birds. The plant's secondary treatment helps reduce nutrient loads that could contribute to hypoxia in the Gulf of Mexico.