Frequently Asked Questions

No.

Illinois EPA’s notification to Columbia was triggered by Dupo’s reported PFOS result and the existence of an emergency interconnection.  Columbia has issued the notice because Illinois EPA has directed the City to do so under Right-to-Know requirements.

No.

Columbia cannot receive Dupo water under normal operating conditions.  Columbia is a higher-pressure system; the emergency interconnect is configured such that the normal hydraulic direction is Columbia → Dupo.

Illinois EPA requires public notification by approved methods.  The City is following a notification approach authorized by Illinois EPA for community notification.

Please read the official Illinois EPA Public Health Notice linked above.

If you have questions, contact the Illlinois EPA using the information below.