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Contact Us About EPA in Illinois

Please use the form below to send us comments or questions. Be sure to include your e-mail address if you’d like a response. Including specific details in your questions may help us provide a more focused and applicable response.

Call Region 5 toll-free at 800-621-8431
Call us on weekdays from 8:00 am to 4:30 pm Central time. You can leave a message if you call outside of business hours.

Mailing Address:
US EPA Region 5
77 W. Jackson Blvd.
Mail Code RE-19J
Chicago, IL 60604-3590

Email: r5hotline@epa.gov