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County file — WY

Underground Storage Tanks in Fremont County, WY — 305 facilities, 160 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Fremont County, population 39,845.

305UST facilities
101tanks in service
679closed tanks
160leak records
31open cases
117no further action

Fremont County has 305 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 101 tanks in service and 679 tanks that have been closed or removed, plus 2 temporarily out of service. Over the life of the program, 160 fuel releases were reported here; 117 (73% of records) were investigated and closed with No Further Action, and 31 of those cleanup cases were still open when the snapshot was compiled.

That works out to 25.3 tanks in service per 10,000 residents, below the Wyoming 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 Fremont County, WY?

The EPA UST Finder snapshot lists 305 registered UST facilities in Fremont County with 101 tanks currently in service, 679 closed or removed tanks, and 2 temporarily out of service.

How many fuel leaks have been reported in Fremont County?

160 releases from underground storage tanks are on record for Fremont County. 117 (73%) reached No Further Action status, while 31 cleanup cases remained open in the snapshot.

How do I check a specific address in Fremont County?

Use the free TankCheck screening at https://tankcheckusa.site/ — paste any Fremont 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 Wyoming DEQ Storage Tank Program.

Verify with the state

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

Nearby countys in Wyoming

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