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County file — WI

Underground Storage Tanks in Walworth County, WI — 594 facilities, 317 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Walworth County, population 103,235.

594UST facilities
200tanks in service
1,253closed tanks
317leak records
9open cases
308no further action

Walworth County has 594 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 200 tanks in service and 1,253 tanks that have been closed or removed. Over the life of the program, 317 fuel releases were reported here; 308 (97% of records) were investigated and closed with No Further Action, and 9 of those cleanup cases were still open when the snapshot was compiled.

That works out to 19.4 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 Walworth County, WI?

The EPA UST Finder snapshot lists 594 registered UST facilities in Walworth County with 200 tanks currently in service, 1,253 closed or removed tanks, and 0 temporarily out of service.

How many fuel leaks have been reported in Walworth County?

317 releases from underground storage tanks are on record for Walworth County. 308 (97%) reached No Further Action status, while 9 cleanup cases remained open in the snapshot.

How do I check a specific address in Walworth County?

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