Overview
Belleville STP 1 serves approximately 52,300 residents in Belleville, Illinois, as part of the city's municipal wastewater infrastructure. The plant operates under U.S. EPA and Illinois EPA regulatory oversight.
Belleville STP 1 is a municipal wastewater treatment plant located in Belleville, Illinois, serving a population of around 52,300. The facility is situated in Saint Clair County, near the Kaskaskia River watershed, and plays a key role in managing wastewater for this Midwestern community. As a medium-sized agglomeration, the plant is expected to meet secondary treatment standards under the U.S. Clean Water Act, administered through the National Pollutant Discharge Elimination System (NPDES) permit program. Illinois EPA issues permits that set effluent limits to protect water quality in receiving streams. The plant's treated effluent ultimately drains into the Mississippi River basin via local waterways, contributing to the overall water quality of the Mississippi River system. This river supports diverse aquatic life and provides drinking water for millions downstream.
Environmental context
Belleville STP 1 discharges into the Kaskaskia River watershed, a tributary of the Mississippi River. The Mississippi River is a major ecological corridor supporting fish, migratory birds, and other wildlife. The plant's operations help maintain water quality in this important river system, which ultimately flows into the Gulf of Mexico.
Frequently asked questions
Belleville STP 1 is located on South Illinois Street in Belleville, Saint Clair County, Illinois, United States.
The plant serves approximately 52,300 residents in the Belleville area.
The plant discharges treated effluent into the Kaskaskia River watershed, which flows into the Mississippi River and eventually the Gulf of Mexico.
The plant operates under the U.S. Clean Water Act, with NPDES permits issued by the Illinois Environmental Protection Agency. These permits set effluent limits to protect water quality.
Plants of this size typically require secondary treatment as a minimum under the Clean Water Act, often including biological processes and disinfection to meet permit limits.
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