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County file — WI

Underground Storage Tanks in Dunn County, WI — 270 facilities, 114 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Dunn County, population 44,806.

270UST facilities
112tanks in service
541closed tanks
114leak records
9open cases
105no further action

Dunn County has 270 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 112 tanks in service and 541 tanks that have been closed or removed. Over the life of the program, 114 fuel releases were reported here; 105 (92% 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 25.0 tanks in service per 10,000 residents, above 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 Dunn County, WI?

The EPA UST Finder snapshot lists 270 registered UST facilities in Dunn County with 112 tanks currently in service, 541 closed or removed tanks, and 0 temporarily out of service.

How many fuel leaks have been reported in Dunn County?

114 releases from underground storage tanks are on record for Dunn County. 105 (92%) reached No Further Action status, while 9 cleanup cases remained open in the snapshot.

How do I check a specific address in Dunn County?

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