TankCheck

TankCheck / States / Illinois

County file — IL

Underground Storage Tanks in St. Clair County, IL — 686 facilities, 561 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for St. Clair County, population 268,351.

686UST facilities
381tanks in service
1,476closed tanks
561leak records
196open cases
365no further action

St. Clair County has 686 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 381 tanks in service and 1,476 tanks that have been closed or removed. Over the life of the program, 561 fuel releases were reported here; 365 (65% of records) were investigated and closed with No Further Action, and 196 of those cleanup cases were still open when the snapshot was compiled.

That works out to 14.2 tanks in service per 10,000 residents, about equal to the Illinois average of 13.7 per 10,000. Countywide numbers are context, not a verdict on any parcel — tank risk is hyper-local, falling off within a few hundred feet.

Check any address in St. Clair County

Paste an address to map every registered tank and reported leak within a mile — distances in feet, cleanup statuses, and an A–F screening grade. Free, no login.

Screen an address

Frequently asked questions

How many underground storage tanks are in St. Clair County, IL?

The EPA UST Finder snapshot lists 686 registered UST facilities in St. Clair County with 381 tanks currently in service, 1,476 closed or removed tanks, and 0 temporarily out of service.

How many fuel leaks have been reported in St. Clair County?

561 releases from underground storage tanks are on record for St. Clair County. 365 (65%) reached No Further Action status, while 196 cleanup cases remained open in the snapshot.

How do I check a specific address in St. Clair County?

Use the free TankCheck screening at https://tankcheckusa.site/ — paste any St. Clair County address to map every registered tank and reported leak within a mile, with distances in feet and an A–F screening grade. Verify current records with the Illinois EPA LUST Program / OSFM.

Verify with the state

The live regulatory record for any St. Clair County facility or leak case is held by the Illinois EPA LUST Program / OSFM. Newer records than this 2018–2021 snapshot may exist.

Nearby countys in Illinois

← All Illinois counts