TankCheck

TankCheck / States / California

County file — CA

Underground Storage Tanks in Marin County, CA — 87 facilities, 367 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Marin County, population 261,748.

87UST facilities
225tanks in service
0closed tanks
367leak records
16open cases
351no further action

Marin County has 87 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 225 tanks in service and 0 tanks that have been closed or removed. Over the life of the program, 367 fuel releases were reported here; 351 (96% of records) were investigated and closed with No Further Action, and 16 of those cleanup cases were still open when the snapshot was compiled.

That works out to 8.6 tanks in service per 10,000 residents, below 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.

Check any address in Marin County

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 Marin County, CA?

The EPA UST Finder snapshot lists 87 registered UST facilities in Marin County with 225 tanks currently in service, 0 closed or removed tanks, and 0 temporarily out of service.

How many fuel leaks have been reported in Marin County?

367 releases from underground storage tanks are on record for Marin County. 351 (96%) reached No Further Action status, while 16 cleanup cases remained open in the snapshot.

How do I check a specific address in Marin County?

Use the free TankCheck screening at https://tankcheckusa.site/ — paste any Marin 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 Marin 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

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