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County file — IL

Underground Storage Tanks in Stephenson County, IL — 145 facilities, 106 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Stephenson County, population 46,654.

145UST facilities
92tanks in service
309closed tanks
106leak records
30open cases
76no further action

Stephenson County has 145 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 92 tanks in service and 309 tanks that have been closed or removed. Over the life of the program, 106 fuel releases were reported here; 76 (72% of records) were investigated and closed with No Further Action, and 30 of those cleanup cases were still open when the snapshot was compiled.

That works out to 19.7 tanks in service per 10,000 residents, well above 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.

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Frequently asked questions

How many underground storage tanks are in Stephenson County, IL?

The EPA UST Finder snapshot lists 145 registered UST facilities in Stephenson County with 92 tanks currently in service, 309 closed or removed tanks, and 0 temporarily out of service.

How many fuel leaks have been reported in Stephenson County?

106 releases from underground storage tanks are on record for Stephenson County. 76 (72%) reached No Further Action status, while 30 cleanup cases remained open in the snapshot.

How do I check a specific address in Stephenson County?

Use the free TankCheck screening at https://tankcheckusa.site/ — paste any Stephenson 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 Stephenson 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

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