UST Map

Arizona UST Directory

9,593 facilities · 9,056 LUST releases

Arizona manages a substantial network of underground storage tanks (USTs), with 9,593 registered UST facilities across the state. This includes 5,686 active tanks and 22,740 closed tanks. The environmental impact of these systems is evident, as Arizona has documented 9,100 leaking underground storage tank (LUST) release sites. Of these, 433 releases are currently classified as "Open," indicating ongoing cleanup requirements. Cities with the highest concentration of UST facilities and releases include Phoenix (1298 facilities, 2457 releases), Tucson (635 facilities, 1208 releases), Mesa (250 facilities, 537 releases), Tempe (152 facilities, 306 releases), and Yuma (132 facilities, 286 releases

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Frequently Asked Questions

How many underground storage tanks are in Arizona?

Arizona has 9,593 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 Arizona?

There are 9,056 documented LUST (Leaking Underground Storage Tank) releases in Arizona. 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 Arizona?

You can search for UST facilities and LUST release sites near any address in Arizona 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.