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County file — HI

Underground Storage Tanks in Honolulu County, HI — 1,567 facilities, 928 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Honolulu County, population 1,014,211.

1,567UST facilities
774tanks in service
3,337closed tanks
928leak records
61open cases
867no further action

Honolulu County has 1,567 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 774 tanks in service and 3,337 tanks that have been closed or removed, plus 35 temporarily out of service. Over the life of the program, 928 fuel releases were reported here; 867 (93% of records) were investigated and closed with No Further Action, and 61 of those cleanup cases were still open when the snapshot was compiled.

That works out to 7.6 tanks in service per 10,000 residents, below the Hawaii average of 9.1 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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Frequently asked questions

How many underground storage tanks are in Honolulu County, HI?

The EPA UST Finder snapshot lists 1,567 registered UST facilities in Honolulu County with 774 tanks currently in service, 3,337 closed or removed tanks, and 35 temporarily out of service.

How many fuel leaks have been reported in Honolulu County?

928 releases from underground storage tanks are on record for Honolulu County. 867 (93%) reached No Further Action status, while 61 cleanup cases remained open in the snapshot.

How do I check a specific address in Honolulu County?

Use the free TankCheck screening at https://tankcheckusa.site/ — paste any Honolulu 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 Hawaii DOH UST Section.

Verify with the state

The live regulatory record for any Honolulu County facility or leak case is held by the Hawaii DOH UST Section. Newer records than this 2018–2021 snapshot may exist.

Nearby countys in Hawaii

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