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County file — CT

Underground Storage Tanks in Fairfield County, CT — 1,846 facilities, 560 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Fairfield County, population 964,796.

1,846UST facilities
1,203tanks in service
6,387closed tanks
560leak records
199open cases
361no further action

Fairfield County has 1,846 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 1,203 tanks in service and 6,387 tanks that have been closed or removed, plus 41 temporarily out of service. Over the life of the program, 560 fuel releases were reported here; 361 (64% of records) were investigated and closed with No Further Action, and 199 of those cleanup cases were still open when the snapshot was compiled.

That works out to 12.5 tanks in service per 10,000 residents, below the Connecticut average of 14.2 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 Fairfield County, CT?

The EPA UST Finder snapshot lists 1,846 registered UST facilities in Fairfield County with 1,203 tanks currently in service, 6,387 closed or removed tanks, and 41 temporarily out of service.

How many fuel leaks have been reported in Fairfield County?

560 releases from underground storage tanks are on record for Fairfield County. 361 (64%) reached No Further Action status, while 199 cleanup cases remained open in the snapshot.

How do I check a specific address in Fairfield County?

Use the free TankCheck screening at https://tankcheckusa.site/ — paste any Fairfield 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 CT DEEP UST Program.

Verify with the state

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

Nearby countys in Connecticut

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