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Sauk Village Public Water Supply Contamination

Sauk Village, Illinois
Cook County

In June 2009, the Illinois Environmental Protection Agency (Illinois EPA) issued public notices to all Sauk Village Water Supply users regarding vinyl chloride contamination in groundwater that is affecting the community water system (CWS). Notification was performed purusant to the Right-to-Know law. In the water drawn from Well Number 3, the concentration of vinyl chloride in 2009 at 3.49 micrograms per liter (ug/L) violated the federal maximum contaminant level (MCL) of 2 ug/L allowed for a public water supply. Well Number 3 was taken out of service in 2009 and has not been part of the system since then.

The Right-to-Know law requires a CWS owner/operator to notify all end users when water is contaminated or there is a threat of contamination above groundwater quality standards. This law establishes methods of notification and strict time frames for meeting the required notifications. Public notices are posted on the Illinois EPA Notices to Public Water Supply Users about Groundwater Contamination webpage (includes Sauk Village notices).

Contact

For more information, please contact the Illinois EPA Office of Community Relations. Additional documents not available on this webpage may be obtained through a Freedom of Information Act request or through IEPA Document Explorer.