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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.
An underground storage tank system is a tank and any underground piping connected to the tank that has at least 10 percent of its combined volume underground. The federal UST regulations apply only to UST systems storing either petroleum or certain hazardous substances.
What is an underground storage tank (UST) system? What is the history of the federal underground storage tank program? Who can answer questions about UST systems? Why are UST systems regulated? Who regulates UST systems? What are the responsibilities of an UST owner or operator? What are my reporting responsibilities as an owner or operator?
A complete version of the law that governs underground storage tanks (USTs) is available in the U.S. Code, Title 42, Chapter 82, Subchapter IX. This law incorporates amendments to Subtitle I of the Solid Waste Disposal Act as well as the UST provisions of the Energy Policy Act of 2005 and gives EPA the authority to regulate USTs.
EPA developed UST Finder, a web map application containing a comprehensive national map of underground storage tank (UST) and UST release data. The application has a combination of data sourced from states and territories, and EPA data for Indian country.
Learn about operating and maintaining your underground storage tank (UST) system, including reporting, recordkeeping, installation, and closing and replacing tanks.
Landing page for the UST Finder. UST Finder, a flexible web-based map application containing a comprehensive, state-sourced national map of underground storage tank (UST) and leaking UST (LUST) data.
Learn about operating and maintaining your underground storage tank (UST) system, including reporting, recordkeeping, installation, and closing and replacing tanks.
In 2015, EPA revised the underground storage tank (UST) regulations. Below you will find new requirements for spill protection, overfill protection, and corrosion protection.
An underground storage tank system (UST) is a tank and any underground piping connected to the tank that has at least 10 percent of its combined volume underground. The federal UST regulations apply only to UST systems storing either petroleum or certain hazardous substances.