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County file — MT

Underground Storage Tanks in Petroleum County, MT — 9 facilities, 8 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Petroleum County, population 476.

9UST facilities
0tanks in service
17closed tanks
8leak records
3open cases
5no further action

Petroleum County has 9 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 0 tanks in service and 17 tanks that have been closed or removed. Over the life of the program, 8 fuel releases were reported here; 5 (62% of records) were investigated and closed with No Further Action, and 3 of those cleanup cases were still open when the snapshot was compiled.

That works out to 0.0 tanks in service per 10,000 residents, well below the Montana average of 30.9 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 Petroleum County, MT?

The EPA UST Finder snapshot lists 9 registered UST facilities in Petroleum County with 0 tanks currently in service, 17 closed or removed tanks, and 0 temporarily out of service.

How many fuel leaks have been reported in Petroleum County?

8 releases from underground storage tanks are on record for Petroleum County. 5 (62%) reached No Further Action status, while 3 cleanup cases remained open in the snapshot.

How do I check a specific address in Petroleum County?

Use the free TankCheck screening at https://tankcheckusa.site/ — paste any Petroleum 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 Montana DEQ UST Program.

Verify with the state

The live regulatory record for any Petroleum County facility or leak case is held by the Montana DEQ UST Program. Newer records than this 2018–2021 snapshot may exist.

Nearby countys in Montana

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