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County file — MI

Underground Storage Tanks in Mason County, MI — 159 facilities, 107 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Mason County, population 29,309.

159UST facilities
54tanks in service
388closed tanks
107leak records
48open cases
59no further action

Mason County has 159 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 54 tanks in service and 388 tanks that have been closed or removed, plus 8 temporarily out of service. Over the life of the program, 107 fuel releases were reported here; 59 (55% of records) were investigated and closed with No Further Action, and 48 of those cleanup cases were still open when the snapshot was compiled.

That works out to 18.4 tanks in service per 10,000 residents, above the Michigan average of 16.8 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 Mason County, MI?

The EPA UST Finder snapshot lists 159 registered UST facilities in Mason County with 54 tanks currently in service, 388 closed or removed tanks, and 8 temporarily out of service.

How many fuel leaks have been reported in Mason County?

107 releases from underground storage tanks are on record for Mason County. 59 (55%) reached No Further Action status, while 48 cleanup cases remained open in the snapshot.

How do I check a specific address in Mason County?

Use the free TankCheck screening at https://tankcheckusa.site/ — paste any Mason 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 EGLE Storage Tank Program.

Verify with the state

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

Nearby countys in Michigan

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