WINCHESTER STP and COLLECTION SYSTEM - Scott County, Illinois Wastewater Treatment

The WINCHESTER STP and COLLECTION SYSTEM is a municipal wastewater treatment facility located in Scott County, Illinois, United States. It serves a small community of about 1,593 residents, providing essential sanitation services to the area. The plant is situated in a rural setting, contributing to the local infrastructure. The plant employs secondary treatment, which is the standard level required by the US Clean Water Act for municipal wastewater. With a designed capacity of 1,211.33 units and an average discharge volume of 870.65 units, the facility operates within its capacity to manage the community's wastewater effectively. The plant is regulated under the National Pollutant Discharge Elimination System (NPDES) permit program, ensuring compliance with environmental standards. The treated effluent is discharged into local receiving waters, which ultimately flow into the Illinois River and then the Mississippi River. This contributes to the protection of downstream aquatic ecosystems and supports the overall water quality of the region. The plant plays a vital role in preventing pollution and safeguarding public health in the Scott County area.

The plant discharges into local streams that drain into the Illinois River, a major tributary of the Mississippi River. This watershed supports diverse aquatic life and provides habitat for fish and migratory birds. The secondary treatment process reduces organic pollutants and suspended solids, helping to maintain the ecological balance of the receiving waters.