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Underground Storage Tanks (USTs)

UST Performance Measures

EPA collects data from states, territories, and the District of Columbia regarding UST performance measures. EPA provides data on work in Indian country, since the Agency implements the program there. These data include information such as the number of active and closed petroleum tanks and hazardous substance tanks, releases confirmed, cleanups initiated and completed, and inspections conducted.  These data also include the percentage of facilities in significant operational compliance and those in compliance with UST technical requirements, operator training, financial responsibility, and walk through requirements.  The reports below provide data in table format for the reporting period indicated.


State and territory underground storage tank programs report to EPA periodically throughout the year with data on their UST performance, based on measures in the 2018 UST And LUST Performance Measures Definitions (PDF) (8 pp, 96 K) ). EPA compiles the data for all states, territories, and Indian country and makes the data publicly available below.


For assistance with accessibility for the PDFs, please email Sharon Fredericks ( For earlier Performance Measures reports, please visit EPA’s Archive.

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