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County file — IA

Underground Storage Tanks in Hamilton County, IA — 132 facilities, 54 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Hamilton County, population 15,420.

132UST facilities
49tanks in service
293closed tanks
54leak records
6open cases
48no further action

Hamilton County has 132 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 49 tanks in service and 293 tanks that have been closed or removed. Over the life of the program, 54 fuel releases were reported here; 48 (89% of records) were investigated and closed with No Further Action, and 6 of those cleanup cases were still open when the snapshot was compiled.

That works out to 31.8 tanks in service per 10,000 residents, well above the Iowa average of 22.3 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 Hamilton County, IA?

The EPA UST Finder snapshot lists 132 registered UST facilities in Hamilton County with 49 tanks currently in service, 293 closed or removed tanks, and 0 temporarily out of service.

How many fuel leaks have been reported in Hamilton County?

54 releases from underground storage tanks are on record for Hamilton County. 48 (89%) reached No Further Action status, while 6 cleanup cases remained open in the snapshot.

How do I check a specific address in Hamilton County?

Use the free TankCheck screening at https://tankcheckusa.site/ — paste any Hamilton 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 Iowa DNR UST Program.

Verify with the state

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

Nearby countys in Iowa

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