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EPA-regulated facilities in Cook County, IL

There are 26,452 EPA-regulated facilities inside Cook County, Illinois. The most common kinds are hazardous waste (17,115), air emissions (9,076), water discharge (3,804). 87 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 390 have a violation on record. Penalties over the last five years total $45M across 84 sites.

Open the map of Cook County

26,452facilities in the county
87in significant noncompliance
390with a violation on record
$45Min penalties, last 5 years

By category

CategoryFacilities
Hazardous waste17,115
Treatment, storage or disposal19
Large quantity generators282
Small quantity generators5,652
Transporters45
Chemical (RMP/TRI)1,523
Superfund221
Air emissions9,076
Major sources236
Synthetic minor sources202
Minor sources7,977
Water discharge3,804
Major permits10
Minor permits2,274
Drinking water systems699
Greenhouse gas reporters39
Data centers65
Scrap yards23
Recycling centers14

A facility enrolled in several programs counts once in the total and once in each of its categories.

In significant noncompliance

The EPA's designation for its most serious or persistent violations, as of the latest data.

Largest penalties

Penalties assessed over the last five years.

Superfund sites

Data centers

Towns in Cook County

Bordering counties

Reading these numbers

These are regulatory records, not measurements of pollution. Most facilities appear because they hold a permit or file reports, and most of them are compliant; a listing is not a claim that a facility has polluted anything. Compliance status and penalties are the EPA's own determinations in data retrieved Oct 9, 2026. The Data page explains where each record comes from and how it can mislead.