3 plants indexed.
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.
O Fallon City wastewater treatment plant serves approximately 27,190 people in Saint Clair County, Illinois. The facility discharges into local waterways under the US Clean Water Act.
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.