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County file — DE

Underground Storage Tanks in New Castle County, DE — 1,460 facilities, 3,072 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for New Castle County, population 566,709.

1,460UST facilities
616tanks in service
4,027closed tanks
3,072leak records
51open cases
3,021no further action

New Castle County has 1,460 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 616 tanks in service and 4,027 tanks that have been closed or removed, plus 16 temporarily out of service. Over the life of the program, 3,072 fuel releases were reported here; 3,021 (98% of records) were investigated and closed with No Further Action, and 51 of those cleanup cases were still open when the snapshot was compiled.

That works out to 10.9 tanks in service per 10,000 residents, below the Delaware average of 12.1 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 New Castle County, DE?

The EPA UST Finder snapshot lists 1,460 registered UST facilities in New Castle County with 616 tanks currently in service, 4,027 closed or removed tanks, and 16 temporarily out of service.

How many fuel leaks have been reported in New Castle County?

3,072 releases from underground storage tanks are on record for New Castle County. 3,021 (98%) reached No Further Action status, while 51 cleanup cases remained open in the snapshot.

How do I check a specific address in New Castle County?

Use the free TankCheck screening at https://tankcheckusa.site/ — paste any New Castle 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 DNREC Tank Management Section.

Verify with the state

The live regulatory record for any New Castle County facility or leak case is held by the DNREC Tank Management Section. Newer records than this 2018–2021 snapshot may exist.

Nearby countys in Delaware

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