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County file — ID

Underground Storage Tanks in Ada County, ID — 786 facilities, 333 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Ada County, population 454,935.

786UST facilities
607tanks in service
1,691closed tanks
333leak records
6open cases
327no further action

Ada County has 786 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 607 tanks in service and 1,691 tanks that have been closed or removed, plus 26 temporarily out of service. Over the life of the program, 333 fuel releases were reported here; 327 (98% 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 13.3 tanks in service per 10,000 residents, well below the Idaho average of 18.8 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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Paste an address to map every registered tank and reported leak within a mile — distances in feet, cleanup statuses, and an A–F screening grade. Free, no login.

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Frequently asked questions

How many underground storage tanks are in Ada County, ID?

The EPA UST Finder snapshot lists 786 registered UST facilities in Ada County with 607 tanks currently in service, 1,691 closed or removed tanks, and 26 temporarily out of service.

How many fuel leaks have been reported in Ada County?

333 releases from underground storage tanks are on record for Ada County. 327 (98%) reached No Further Action status, while 6 cleanup cases remained open in the snapshot.

How do I check a specific address in Ada County?

Use the free TankCheck screening at https://tankcheckusa.site/ — paste any Ada 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 Idaho DEQ Storage Tanks.

Verify with the state

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

Nearby countys in Idaho

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