26,154 plants indexed worldwide.
Plants where treatment level information is not publicly available.
Washington STP 1 serves approximately 6,038 people in Washington, Illinois, treating municipal wastewater before discharge. The plant operates under the U.S. Clean Water Act's NPDES permit program.
EL PASO STP serves El Paso, Illinois, treating wastewater for a small community. The plant operates under U.S. EPA and Illinois EPA regulations, discharging into local waterways.
Braidwood STP serves approximately 3,800 residents in Braidwood, Illinois. The plant operates under the U.S. Clean Water Act, which mandates secondary treatment for municipal wastewater facilities.
Highland STP serves approximately 9,400 residents in Highland, Illinois. The plant operates under U.S. Clean Water Act regulations, treating municipal wastewater before discharge to local waterways.
Edwardsville STP serves approximately 20,240 residents in Edwardsville, Illinois. The plant operates under the U.S. Clean Water Act, which governs wastewater treatment and discharge standards.
Granite City Regional WWTP and COLL System serves approximately 109,607 people in Madison, Illinois. The plant operates under the U. S. Clean Water Act, with NPDES permits regulating its discharge to protect local waterways.
Alton STP is a municipal wastewater treatment plant serving approximately 53,721 people in Alton, Illinois, United States. It operates under the US Clean Water Act framework.
EAST ALTON STP serves approximately 7,169 people in East Alton, Illinois. The plant operates under the U.S. Clean Water Act, which mandates secondary treatment for municipal wastewater facilities.
Collinsville STP serves approximately 34,578 residents in Collinsville, Illinois. The plant operates under the U.S. Clean Water Act, with NPDES permits regulating its discharge to protect local waterways.
Wood River STP serves approximately 18,000 residents in Wood River, Illinois. The plant operates under the U.S. Clean Water Act, with NPDES permits regulating its discharge to protect local waterways.
Dupo Sewage Works serves approximately 4,879 residents in Dupo, Illinois, as part of the municipal wastewater infrastructure. The plant operates under the U.S. Clean Water Act framework.
LEBANON STP serves approximately 4,057 residents in Lebanon, Illinois. The plant operates under the US Clean Water Act, which governs wastewater treatment standards for municipal facilities.
MILLSTADT STP serves approximately 4,011 residents in Millstadt, Illinois. The plant discharges treated wastewater into local waterways under the US Clean Water Act framework.
Mascoutah City Of wastewater treatment plant serves approximately 7,750 residents in Saint Clair County, Illinois, United States. The plant operates under the US Clean Water Act framework.
Caseyville Township East wastewater plant serves 44,000 people in Shiloh, Illinois. It operates under the US Clean Water Act, discharging treated effluent to local waterways.
STOOKEY TWP PLT 3 is a municipal wastewater treatment plant serving approximately 17,500 people in Belleville, Illinois, United States. It operates under the US Clean Water Act framework.
Sauget American Bottoms Regional STP serves Cahokia, Illinois, treating wastewater for approximately 72,467 people under the U. S. Clean Water Act framework.
ST CLAIR STP serves Saint Clair County, Illinois, treating wastewater for approximately 14,253 residents. The plant operates under the US Clean Water Act framework, discharging into local waterways.
Caseyville Township West Facility serves Union Hill, Illinois, treating wastewater for approximately 5,000 residents. The plant operates under the U.S. Clean Water Act framework.
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.