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County file — CA

Underground Storage Tanks in San Joaquin County, CA — 266 facilities, 913 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for San Joaquin County, population 744,029.

266UST facilities
731tanks in service
0closed tanks
913leak records
73open cases
840no further action

San Joaquin County has 266 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 731 tanks in service and 0 tanks that have been closed or removed. Over the life of the program, 913 fuel releases were reported here; 840 (92% of records) were investigated and closed with No Further Action, and 73 of those cleanup cases were still open when the snapshot was compiled.

That works out to 9.8 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 San Joaquin County, CA?

The EPA UST Finder snapshot lists 266 registered UST facilities in San Joaquin County with 731 tanks currently in service, 0 closed or removed tanks, and 0 temporarily out of service.

How many fuel leaks have been reported in San Joaquin County?

913 releases from underground storage tanks are on record for San Joaquin County. 840 (92%) reached No Further Action status, while 73 cleanup cases remained open in the snapshot.

How do I check a specific address in San Joaquin County?

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