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County file — MT

Underground Storage Tanks in Sweet Grass County, MT — 39 facilities, 33 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Sweet Grass County, population 3,593.

39UST facilities
15tanks in service
94closed tanks
33leak records
2open cases
31no further action

Sweet Grass County has 39 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 15 tanks in service and 94 tanks that have been closed or removed. Over the life of the program, 33 fuel releases were reported here; 31 (94% of records) were investigated and closed with No Further Action, and 2 of those cleanup cases were still open when the snapshot was compiled.

That works out to 41.7 tanks in service per 10,000 residents, well above 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 Sweet Grass County, MT?

The EPA UST Finder snapshot lists 39 registered UST facilities in Sweet Grass County with 15 tanks currently in service, 94 closed or removed tanks, and 0 temporarily out of service.

How many fuel leaks have been reported in Sweet Grass County?

33 releases from underground storage tanks are on record for Sweet Grass County. 31 (94%) reached No Further Action status, while 2 cleanup cases remained open in the snapshot.

How do I check a specific address in Sweet Grass County?

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