Edinburg STP: Advanced Wastewater Treatment in Edinburg, Illinois

Edinburg STP is a municipal wastewater treatment facility located in Edinburg, Christian County, Illinois. The plant serves a small community of about 1,238 residents, providing advanced treatment to ensure high-quality effluent before discharge. The plant operates with advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 1,135.62 million gallons per day and an average daily flow of 605.67 million gallons, it maintains a moderate utilization rate. As a US facility, it operates under the Clean Water Act's National Pollutant Discharge Elimination System (NPDES) permit program, which sets strict effluent limits to protect water quality. The treated effluent is discharged into local streams that flow into the Sangamon River, a tributary of the Illinois River system. This watershed supports diverse aquatic life and provides recreational opportunities. The plant's advanced treatment helps reduce nutrient loading, protecting downstream ecosystems from eutrophication and maintaining water quality for the region.

The plant discharges into local waterways that drain into the Sangamon River, which flows into the Illinois River and ultimately the Mississippi River. This watershed supports a variety of fish and wildlife, including migratory birds. The advanced treatment at Edinburg STP helps minimize nutrient pollution, which is critical for preventing algal blooms and maintaining dissolved oxygen levels in downstream waters.