427 plants indexed. Showing 412 matching current filters.
Brighton STP serves approximately 2,254 residents in Brighton, Illinois. The plant operates under the US Clean Water Act's NPDES permit program, ensuring treated effluent meets federal water quality standards.
Carlinville STP is a municipal wastewater treatment plant serving approximately 5,900 residents in Carlinville, Illinois. The facility operates under the U.S. Clean Water Act framework.
BENLD STP is a municipal wastewater treatment plant serving 1,740 people in Macoupin County, Illinois, United States. It operates under the US Clean Water Act framework.
Beardstown STP serves approximately 6,100 residents in Beardstown, Illinois. The plant operates under the U.S. Clean Water Act, which mandates secondary treatment for municipal wastewater facilities.
Harrisburg STP serves approximately 9,832 residents in Harrisburg, Illinois. The plant operates under the U.S. Clean Water Act, which mandates secondary treatment for municipal wastewater.
ABINGDON STP serves approximately 3,171 people in Knox County, Illinois. The plant operates under the US Clean Water Act framework, treating municipal wastewater before discharge.
GALENA STP serves 3,460 people in Galena, Illinois. The plant discharges into the Galena River watershed, part of the Mississippi River basin.
East Dubuque WWTP serves approximately 1,995 residents in East Dubuque, Illinois. The plant discharges treated wastewater into the Mississippi River, supporting local water quality and downstream ecosystems.
GRANVILLE STP serves approximately 2,009 residents in Granville, Illinois, as part of the municipal wastewater infrastructure. The plant discharges treated effluent into the local watershed within the Illinois River basin.
Benton WWTP and Collection System serves approximately 7,087 people in Franklin County, Illinois, USA. The plant discharges treated wastewater into local waterways, supporting the region's water quality.
West Frankfort STP serves approximately 8,870 residents in West Frankfort, Illinois. The plant operates under the U.S. Clean Water Act, which mandates secondary treatment for municipal wastewater facilities.
Pinckneyville STP 1 is a municipal wastewater treatment plant serving approximately 2,993 people in Pinckneyville, Illinois, United States. It operates under the US Clean Water Act regulatory framework.
DU QUOIN STP serves Du Quoin, Illinois, treating wastewater for approximately 8,800 residents. The plant operates under U.S. EPA and Illinois EPA regulations, discharging treated effluent into local waterways.
NOKOMIS STP serves 2,590 people in Montgomery County, Illinois. The plant operates under U.S. EPA NPDES regulations for municipal wastewater treatment.
Litchfield STP serves approximately 7,400 residents in Litchfield, Illinois. The plant operates under U.S. Clean Water Act regulations, with discharge likely to a local waterway in the Mississippi River basin.
Neoga STP is a municipal wastewater treatment plant serving approximately 2,475 residents in Neoga, Illinois, United States. The facility manages wastewater for this small community under state and federal environmental regulations.
Mason City STP serves approximately 3,150 residents in Mason County, Illinois. The plant operates under the US Clean Water Act, which mandates secondary treatment for municipal wastewater facilities.
HAVANA STP serves approximately 3,300 residents in Havana, Illinois. The plant discharges treated wastewater into the Illinois River watershed, ultimately draining to the Mississippi River.
MANITO STP serves the village of Manito, Illinois, treating wastewater for approximately 1,344 residents. The plant is located inland, over 50 km from the coast, and discharges into the local watershed.
Mount Carroll STP is a municipal wastewater treatment plant serving approximately 1,921 residents in Mount Carroll, Illinois, USA. It discharges treated effluent into local waterways within the Mississippi River basin.
UtilityRadar indexes 427 wastewater treatment plants in Illinois, with treatment level, capacity, operator and discharge data on each record.