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County file — CO

Underground Storage Tanks in Larimer County, CO — 527 facilities, 441 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Larimer County, population 344,588.

527UST facilities
344tanks in service
1,065closed tanks
441leak records
21open cases
420no further action

Larimer County has 527 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 344 tanks in service and 1,065 tanks that have been closed or removed, plus 4 temporarily out of service. Over the life of the program, 441 fuel releases were reported here; 420 (95% of records) were investigated and closed with No Further Action, and 21 of those cleanup cases were still open when the snapshot was compiled.

That works out to 10.0 tanks in service per 10,000 residents, below the Colorado average of 12.5 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 Larimer County, CO?

The EPA UST Finder snapshot lists 527 registered UST facilities in Larimer County with 344 tanks currently in service, 1,065 closed or removed tanks, and 4 temporarily out of service.

How many fuel leaks have been reported in Larimer County?

441 releases from underground storage tanks are on record for Larimer County. 420 (95%) reached No Further Action status, while 21 cleanup cases remained open in the snapshot.

How do I check a specific address in Larimer County?

Use the free TankCheck screening at https://tankcheckusa.site/ — paste any Larimer 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 Colorado OPS Petroleum Program.

Verify with the state

The live regulatory record for any Larimer County facility or leak case is held by the Colorado OPS Petroleum Program. Newer records than this 2018–2021 snapshot may exist.

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