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Possible online services disruption due to Internet related outage

A worldwide technology outage is causing disruption to some State of Illinois online systems.  We are aware of this issue and are diligently working on restoration.

Notices to Private Well Users about Public Water Supply-related Groundwater Contamination

Red Dots on the map link to notices and news releases provided by the Illinois Department of Public Health per the 2002 Right-to-Know law to alert private well users to groundwater contamination that may threaten their wells. The notices occur when groundwater contamination is detected in public water supply wells at levels determined by Illinois EPA to be a threat to private well users in the vicinity. This would not necessarily constitute a threat to the public water supply.

Public Water Supplies by County

See the navigation to find notices by county.