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County file — CO

Underground Storage Tanks in Jefferson County, CO — 847 facilities, 817 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Jefferson County, population 578,496.

847UST facilities
623tanks in service
1,788closed tanks
817leak records
65open cases
752no further action

Jefferson County has 847 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 623 tanks in service and 1,788 tanks that have been closed or removed, plus 1 temporarily out of service. Over the life of the program, 817 fuel releases were reported here; 752 (92% of records) were investigated and closed with No Further Action, and 65 of those cleanup cases were still open when the snapshot was compiled.

That works out to 10.8 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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Frequently asked questions

How many underground storage tanks are in Jefferson County, CO?

The EPA UST Finder snapshot lists 847 registered UST facilities in Jefferson County with 623 tanks currently in service, 1,788 closed or removed tanks, and 1 temporarily out of service.

How many fuel leaks have been reported in Jefferson County?

817 releases from underground storage tanks are on record for Jefferson County. 752 (92%) reached No Further Action status, while 65 cleanup cases remained open in the snapshot.

How do I check a specific address in Jefferson County?

Use the free TankCheck screening at https://tankcheckusa.site/ — paste any Jefferson 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 Jefferson County facility or leak case is held by the Colorado OPS Petroleum Program. Newer records than this 2018–2021 snapshot may exist.

Nearby countys in Colorado

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