Main Office
69 W. Washington Street Room 1900
Chicago, IL 60602
(312) 603-8200
Sunday: Closed
Monday: 8:30 am-4:30 pm
Tuesday: 8:30 am-4:30 pm
Wednesday: 8:30 am-4:30 pm
Thursday: 8:30 am-4:30 pm
Friday: 8:30 am-4:30 pm
Saturday: Closed
Air Monitoring Laboratory
1500 Maybrook Drive
Maywood, IL 60153
(708) 865-5962
Monday - Friday: 8:30 am-4:30 pm
Location and Contact Information Hide
The Cook County Department of Environment and Sustainability works to improve the quality of the environment for all residents of Cook County.
Mandates and Key Activities
  • Enforce Cook County Environmental Control Ordinance
  • Implement Illinois EPA cooperative agreements on pollution control, inspection
  • Administer U.S. EPA, DOE and other grant agreements
  • Permit and inspect industrial and commercial fuel-burning equipment, asbestos abatement, demolition, solid waste facilities, open burning and facilities that store hazardous chemicals for environmental compliance
  • Investigate citizen complaints and ordinance violations
  • Reduce waste in energy, materials and water
  • Prepare solid waste plan for suburban Cook County
  • Monitor air quality for the U.S. EPA

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

Certificate of Operation

The Cook County Department of Environment and Sustainability is utilizing an on-line system for facilities to print and post their annual Certificate of Operation (COO).  Please enter the required information from the Statement of Account that was mailed to you.  Please wait at least two weeks after submitting your payment to the County to print your COO.  Note that in in accordance with Sec. 30-186 of the Cook County Municipal Code, “A current certificate of operation shall be required for any person to use or operate any fuel-burning, combustion, process equipment, process, or air pollution control device.”

Sustainability in Cook County

Have you seen Cook County’s sustainability website? At Cook County we want to lead by example. At the site you’ll find information about County projects to lower our environmental footprint and our costs.