TankCheck

TankCheck / States / California

County file — CA

Underground Storage Tanks in Napa County, CA — 44 facilities, 343 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Napa County, population 143,012.

44UST facilities
133tanks in service
0closed tanks
343leak records
12open cases
331no further action

Napa County has 44 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 133 tanks in service and 0 tanks that have been closed or removed. Over the life of the program, 343 fuel releases were reported here; 331 (97% of records) were investigated and closed with No Further Action, and 12 of those cleanup cases were still open when the snapshot was compiled.

That works out to 9.3 tanks in service per 10,000 residents, about equal to the California average of 9.5 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 Napa County, CA?

The EPA UST Finder snapshot lists 44 registered UST facilities in Napa County with 133 tanks currently in service, 0 closed or removed tanks, and 0 temporarily out of service.

How many fuel leaks have been reported in Napa County?

343 releases from underground storage tanks are on record for Napa County. 331 (97%) reached No Further Action status, while 12 cleanup cases remained open in the snapshot.

How do I check a specific address in Napa County?

Use the free TankCheck screening at https://tankcheckusa.site/ — paste any Napa 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 California SWRCB UST Program.

Verify with the state

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

Nearby countys in California

← All California counts