UST Map

California UST Directory

13,496 facilities · 35,004 LUST releases

California manages 13,496 registered underground storage tank (UST) facilities, which contain 37,515 active underground storage tanks. The state has documented 4

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Frequently Asked Questions

How many underground storage tanks are in California?

California has 13,496 registered UST facilities tracked in the EPA database. These facilities contain active and closed underground storage tanks used primarily for petroleum storage.

What are LUST releases in California?

There are 35,004 documented LUST (Leaking Underground Storage Tank) releases in California. These are confirmed or suspected releases of petroleum or hazardous substances from underground storage tank systems that require investigation and cleanup.

How do I check for tank contamination near me in California?

You can search for UST facilities and LUST release sites near any address in California using UST Map's interactive map or by browsing city-level pages. Each facility and release listing includes proximity data such as population within 1,500 feet and nearby private wells.