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Underground Injection Control (UIC)
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UIC Injection Well Inventory

Each year, the UIC program collects inventory information on injection wells nationwide. The inventory numbers include wells with operating status of Proposed, Under Construction, Active, and Temporarily Abandoned. The UIC program uses the inventory numbers in combination with other funding criteria to establish annual funding levels for programs with primary enforcement authority.   

The most recent injection well inventory information is provided in the links below.

FY 2019 State UIC Inventory (xlsx)  The file is an Excel spreadsheet with state-specific injection well information.

FY 2019 Tribal UIC Inventory (xlsx)  The file is an Excel spreadsheet with tribe-specific injection well information.

  • Underground Injection Control Home
  • Class I Industrial and Municipal Waste Disposal Wells
  • Class II Oil and Gas Related Injection Wells
  • Class III Injection Wells for Solution Mining
  • Class IV Shallow Hazardous and Radioactive Injection Wells
  • Class V Wells for Injection of Non-Hazardous Fluids into or Above Underground Sources of Drinking Water
  • Class VI Wells Used for Geologic Sequestration of CO2
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on January 26, 2022
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