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
(708 )865-6391
Monday - Friday: 8:30 am-4:30 pm
Walk in Hours for Asbestos and Demolition Permits
69 W. Washington Street Room 1900
Chicago, IL 60602
Monday: 9:00 am-12:00 pm
Wednesday: 9:00 am-12:00 pm
Location and Contact Information Hide
The Cook County Department of Environmental Control 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


In accordance with Section 1-9 of the County Code, the department transmitted regulations to the County Clerk on April 13, 2017  to be effective May 13, 2017.

The Cook County Board passed item 17-0059 (updates, reorganization and modernization of Chapter 30 Environment of the Cook County Code) on April 12, 2017, with an immediate effective date.  Because the enacted ordinance included the deletion of items that are now in regulations, the Department has notified the County Clerk that the submitted regulations will be in effect as emergency regulations to in order to ensure continuous and safe operations. 

Certificate of Operation

The Cook County Department of Environmental Control 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, “It shall be unlawful for any person to use or operate any fuel-burning, combustion, or process equipment, process, or device which is subject to annual inspection, as set forth in Section 30-231, without having an effective certificate of operation thereof.”

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.