Division of Water Quality - Underground Storage Tank Program
An underground storage tank (UST) is defined by law as "any one or combination of tanks, including pipes connected thereto, that is used for the storage of hazardous substances and that is substantially or totally beneath the surface of the ground" (certain exceptions apply).
The statewide UST Program works to protect public health and safety and the environment from releases of petroleum and other hazardous substances from USTs through four elements: the Leak Prevention Program, Office of Tank Tester Licensing, cleanup of petroleum releases from UST systems and Low Threat Closure, and enforcement.
Highlights
- Information on the Proposed Amendments of California Code of Regulations, Title 23, Division 3, Chapter 16
- Permanent Closure of Single-Walled USTs by December 31, 2025
- State Water Resources Control Board UST Program Monthly Updates
- Report 6 and U.S. EPA TCR Performance Measures
- U.S. EPA UST Finder
- Public Record Information as Required by the Federal Energy Policy Act of 2005
Groundwater Cleanup Information and Resources
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Contact Us
Have a program-specific question? Ask the program.
Contact information is available on the program pages.
- For questions about the Leak Prevention Program: Tom.Henderson@waterboards.ca.gov
- For questions about the UST Cleanup Program: DWQ-USTCleanup@waterboards.ca.gov
- For GeoTracker questions: GeoTracker@waterboards.ca.gov