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County file — WI

Underground Storage Tanks in Jefferson County, WI — 472 facilities, 270 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Jefferson County, population 84,523.

472UST facilities
155tanks in service
996closed tanks
270leak records
14open cases
256no further action

Jefferson County has 472 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 155 tanks in service and 996 tanks that have been closed or removed, plus 2 temporarily out of service. Over the life of the program, 270 fuel releases were reported here; 256 (95% of records) were investigated and closed with No Further Action, and 14 of those cleanup cases were still open when the snapshot was compiled.

That works out to 18.3 tanks in service per 10,000 residents, below the Wisconsin average of 20.7 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 Jefferson County, WI?

The EPA UST Finder snapshot lists 472 registered UST facilities in Jefferson County with 155 tanks currently in service, 996 closed or removed tanks, and 2 temporarily out of service.

How many fuel leaks have been reported in Jefferson County?

270 releases from underground storage tanks are on record for Jefferson County. 256 (95%) reached No Further Action status, while 14 cleanup cases remained open in the snapshot.

How do I check a specific address in Jefferson County?

Use the free TankCheck screening at https://tankcheckusa.site/ — paste any Jefferson 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 Wisconsin DATCP Storage Tanks.

Verify with the state

The live regulatory record for any Jefferson County facility or leak case is held by the Wisconsin DATCP Storage Tanks. Newer records than this 2018–2021 snapshot may exist.

Nearby countys in Wisconsin

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