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County file — MT

Underground Storage Tanks in Flathead County, MT — 314 facilities, 273 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Flathead County, population 99,637.

314UST facilities
239tanks in service
653closed tanks
273leak records
63open cases
210no further action

Flathead County has 314 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 239 tanks in service and 653 tanks that have been closed or removed, plus 16 temporarily out of service. Over the life of the program, 273 fuel releases were reported here; 210 (77% of records) were investigated and closed with No Further Action, and 63 of those cleanup cases were still open when the snapshot was compiled.

That works out to 24.0 tanks in service per 10,000 residents, 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 Flathead County, MT?

The EPA UST Finder snapshot lists 314 registered UST facilities in Flathead County with 239 tanks currently in service, 653 closed or removed tanks, and 16 temporarily out of service.

How many fuel leaks have been reported in Flathead County?

273 releases from underground storage tanks are on record for Flathead County. 210 (77%) reached No Further Action status, while 63 cleanup cases remained open in the snapshot.

How do I check a specific address in Flathead County?

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