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County file — NH

Underground Storage Tanks in Hillsborough County, NH — 1,037 facilities, 545 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Hillsborough County, population 416,672.

1,037UST facilities
605tanks in service
2,870closed tanks
545leak records
134open cases
411no further action

Hillsborough County has 1,037 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 605 tanks in service and 2,870 tanks that have been closed or removed. Over the life of the program, 545 fuel releases were reported here; 411 (75% of records) were investigated and closed with No Further Action, and 134 of those cleanup cases were still open when the snapshot was compiled.

That works out to 14.5 tanks in service per 10,000 residents, well below the New Hampshire average of 19.8 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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Frequently asked questions

How many underground storage tanks are in Hillsborough County, NH?

The EPA UST Finder snapshot lists 1,037 registered UST facilities in Hillsborough County with 605 tanks currently in service, 2,870 closed or removed tanks, and 0 temporarily out of service.

How many fuel leaks have been reported in Hillsborough County?

545 releases from underground storage tanks are on record for Hillsborough County. 411 (75%) reached No Further Action status, while 134 cleanup cases remained open in the snapshot.

How do I check a specific address in Hillsborough County?

Use the free TankCheck screening at https://tankcheckusa.site/ — paste any Hillsborough 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 NHDES UST Program.

Verify with the state

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

Nearby countys in New Hampshire

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