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County file — WI

Underground Storage Tanks in Rock County, WI — 679 facilities, 341 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Rock County, population 162,214.

679UST facilities
313tanks in service
1,565closed tanks
341leak records
10open cases
331no further action

Rock County has 679 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 313 tanks in service and 1,565 tanks that have been closed or removed. Over the life of the program, 341 fuel releases were reported here; 331 (97% of records) were investigated and closed with No Further Action, and 10 of those cleanup cases were still open when the snapshot was compiled.

That works out to 19.3 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 Rock County, WI?

The EPA UST Finder snapshot lists 679 registered UST facilities in Rock County with 313 tanks currently in service, 1,565 closed or removed tanks, and 0 temporarily out of service.

How many fuel leaks have been reported in Rock County?

341 releases from underground storage tanks are on record for Rock County. 331 (97%) reached No Further Action status, while 10 cleanup cases remained open in the snapshot.

How do I check a specific address in Rock County?

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