Main Office
69 W Washington Street Room 1900
Chicago, IL 60602
Phone Number
(312) 603-8200
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UPDATE: Per the Cook County Board President’s Executive Order 2020-3, our office at 69 W. Washington is closed to encourage social distancing and prevent the spread of COVID-19. However many essential functions are still being provided.

You may still register environmental complaints by emailing environment@cookcountyil.gov or calling 312-603-8212.

Complaints about environmental matters in suburban and unincorporated Cook County can be filed with the Department of Environment and Sustainability,
24 hours a day at:  (312) 603-8200.

As of December 1, 2017, the Cook County Department of Environmental Control is now the Department of Environment and Sustainability