Hanover Park WWTP No1 - Wastewater Treatment Plant in Hanover Park, Illinois

Hanover Park WWTP No1 is a municipal wastewater treatment facility located in Hanover Park, DuPage County, Illinois. The plant serves a population of about 5,542 people, placing it in the small-to-medium agglomeration category. It operates under the regulatory framework of the United States Clean Water Act, which requires National Pollutant Discharge Elimination System (NPDES) permits for all discharges. The plant has a designed capacity of 1.00 million gallons per day, indicating its scale relative to the community it serves. Facilities of this size in Illinois typically employ secondary treatment to meet state and federal effluent standards. The plant is situated inland, more than 50 kilometers from the nearest coast. Treated wastewater from the plant likely discharges into nearby streams or rivers that flow into the Fox River watershed, which ultimately drains to the Illinois River and then the Mississippi River. This connection to a major river system underscores the importance of effective treatment to protect downstream water quality and aquatic habitats.

The plant discharges into local waterways within the Fox River basin, which flows into the Illinois River and eventually the Mississippi River. This watershed supports diverse aquatic life and provides drinking water for downstream communities. The region's flat terrain and agricultural land use mean that nutrient removal is important to prevent eutrophication in receiving waters.