EPA-Registered Underground Storage Tank Release Incidents

Records of federally regulated Underground Storage Tank (UST) releases reported to the US EPA by the Connecticut Department of Energy and Environmental Protection (CT DEEP). The dataset includes details such as substance released, cause, cleanup stage, and location. Data is maintained by CT DEEP and was last updated in March 2026.

Use Cases

• Classify Cleanup Stage based on Substance, Cause of Release, and Site Town.
• Analyze temporal trends in Release Date and Substance types across different Site Towns.
• Map incident density using Site Address or Site Town for geospatial risk assessment.
• Identify common Cause of Release factors associated with specific Substances.
• Link records via UST Site ID Number, Incident ID, or REACT Case Number for case history analysis.

Strengths

• Contains 14 specific columns detailing incident cause, substance, location, and status.
• Data is sourced from official EPA reporting by a state environmental agency (CT DEEP).

Limitations

• Dataset excludes releases from non-federally regulated USTs, such as residential heating fuel tanks.
• The provider notes potential errors including misspelled addresses and missing data.
• Not all federally regulated UST releases are required to be reported, creating a potential reporting gap.

Provenance

Source

Connecticut Department of Energy and Environmental Protection (CT DEEP), reporting to the US Environmental Protection Agency (EPA).

Collection Method

Reports submitted by regulated entities to CT DEEP, which are then reported to the EPA.

Time Range

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Freshness

Last updated March 2026.

Geography

State of Connecticut, USA.