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County file — WI

Underground Storage Tanks in Oconto County, WI — 387 facilities, 128 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Oconto County, population 38,656.

387UST facilities
126tanks in service
725closed tanks
128leak records
4open cases
124no further action

Oconto County has 387 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 126 tanks in service and 725 tanks that have been closed or removed, plus 4 temporarily out of service. Over the life of the program, 128 fuel releases were reported here; 124 (97% of records) were investigated and closed with No Further Action, and 4 of those cleanup cases were still open when the snapshot was compiled.

That works out to 32.6 tanks in service per 10,000 residents, well 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 Oconto County, WI?

The EPA UST Finder snapshot lists 387 registered UST facilities in Oconto County with 126 tanks currently in service, 725 closed or removed tanks, and 4 temporarily out of service.

How many fuel leaks have been reported in Oconto County?

128 releases from underground storage tanks are on record for Oconto County. 124 (97%) reached No Further Action status, while 4 cleanup cases remained open in the snapshot.

How do I check a specific address in Oconto County?

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