Bismarck Wastewater Treatment Plant, Illinois | Secondary Treatment for Small Community

The Bismarck wastewater treatment plant is located in Bismarck, Illinois, United States, serving a small community of approximately 2,022 residents. The facility is currently in the projected stage, indicating it is planned or under development. As a secondary treatment plant, it provides biological treatment to reduce organic matter and suspended solids before discharge. Under the US Clean Water Act, wastewater treatment plants of this scale are typically regulated through the National Pollutant Discharge Elimination System (NPDES) permit program, administered by the Illinois Environmental Protection Agency. Secondary treatment is the minimum standard required for municipal wastewater, ensuring compliance with effluent limits for biochemical oxygen demand and total suspended solids. The plant's discharge volume is reported at 605.67 volume units, with a designed capacity of 605.66 volume units, suggesting the facility is sized to handle the community's wastewater flow. The treated effluent is discharged into a local water body, contributing to the protection of downstream aquatic ecosystems in the Vermilion River watershed, which ultimately drains to the Wabash River and the Ohio River system.

The plant discharges into a local water body within the Vermilion River watershed, which flows into the Wabash River, a major tributary of the Ohio River. The Ohio River drains into the Mississippi River, eventually reaching the Gulf of Mexico. The receiving waters support diverse aquatic life and are important for regional biodiversity, including fish species and migratory birds. Proper wastewater treatment helps maintain water quality and ecosystem health in this inland basin.