An official website of the United States government.

Underground Injection Control (UIC)

UIC Fact Sheet

The fact sheet below provides a summary of how the UIC program works to protect underground sources of drinking water (USDWs). It includes information on the types  and number of injection wells in the U.S., and information on inspection programs and regulatory compliance.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.
  • UIC Fact Sheet (PDF)(2 pp, 326 K, April 2020, 816F19005)
    This document provides basic information about injection wells.