This web site was copied prior to January 20, 2005. It is now a Federal record managed by the National Archives and Records Administration. External links, forms, and search boxes may not function within this collection. Learn more.   [hide]
Skip common site navigation and headers
United States Environmental Protection Agency
Underground Injection Control Program
Begin Hierarchical Links EPA Home > Water > Ground Water & Drinking Water > Underground Injection Control Program End Hierarchical Links
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!)

See the UIC Documents link below for 96 new digital documents

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.
  • For an overview of the UIC Program check out the Protecting Drinking Water Through Underground Injection Control: Drinking Water Pocket Guide #2


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


    NewUIC Grant Guidance  

    State UIC Programs

    Source Water Protection Tribal Page

    Regulations and Guidance

    UIC Technical Work Group

    UIC Reporting Forms (7520s)


    Safewater Home | About Our Office | Publications | Calendar | Links | Office of Water | En Español

    Begin Site Footer

    EPA Home | Privacy and Security Notice | Contact Us