Environmental Control

About the Department

The Cook County Department of Environmental Control strives to improve the quality of the environment and protect the public health of the residents of Cook County.

Mandates and Key Activities

  • Inspection and permitting of process equipment, air pollution control equipment, business fuel burning equipment, building demolition, asbestos removal, open burning, gas station vapor recovery, dry cleaners, solid waste and recycling facilities and other activities;
  • Monitoring of air quality across the County;
  • Solid waste planning and coordination in Suburban Cook;
  • Improving sustainability of County operations and Suburban Cook communities.

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 wait at least two weeks after submitting your payment to the County to allow for processing time, before printing your COO.

Click here and enter the required information from the Statement of Account that was mailed in early August.

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.”

 Cook County Sustanibility _ The Official Website of the Cook County Chief Su_Page_1

Sustainability in Cook County

Have you seen Cook County’s sustainability website? http://blog.cookcountyil.gov/sustainability
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.


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

Cook County Environmental Control Ordinance

Chapter 30-Environment

Related Links

U.S. Environmental Protection Agency
Illinois Environmental Protection Agency