Underground Storage Tanks (USTs)

National UST Program Cleans Up Over 500,000 UST Releases

Read more about progress cleaning up UST releases over 33 years.
2015 Revised Underground Storage Tank Regulation
UST Performance Measures

Read more about the performance measures.
Natural Disasters and Underground Storage Tanks

EPA has developed resources to help UST owners and operators prepare for, prevent, or lessen catastrophic effects and environmental harm from natural disasters. Read more about the resources.

Approximately 542,000 underground storage tanks (USTs) nationwide store petroleum or hazardous substances. The greatest potential threat from a leaking UST is contamination of groundwater, the source of drinking water for nearly half of all Americans. EPA, states, territories, and tribes work in partnership with industry to protect the environment and human health from potential releases.