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Underground Injection Control Program
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Classes of
   Injection Wells

     Class I
     Class II
     Class III
     Class IV
     Class V

 

Underground Injection Control (UIC) Program


Federal UIC Directory (Find the Fed to help you!)

cut-away view of Earth's surface & subsurface showing different classes of injection wells

The UIC Program works with state and local governments to oversee underground injection of waste in order to prevent contamination of drinking water resources.  Some of the wastes the UIC program regulates include:

  • Over 9 billion gallons of hazardous waste every year
  • Over 2 billion gallons of brine from oil and gas operations every day
  • Automotive, industrial, sanitary and other wastes that are injected into shallow aquifers.

    Regional UIC web pages
    Region 3  ~ Region 4  ~ Region 5
    Region 6  ~  Region 10
  • What is the UIC Program?

    Classes of Injection Wells
    EPA has defined five classes of wells by the type of waste injected into them. 

    Class V Wells Initiative
    Information about protecting sources of drinking water by complying with new EPA rules on shallow wells used to inject a wide variety of wastes. 

    Study on Hydraulic Fracturing of Coalbed Methane Wells

    State UIC Programs

    Source Water Protection Tribal Page

    Regulations and Guidance

    UIC Technical Work Group

    UIC Reporting Forms (7520s)

     

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