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Permits for deep well injection are issued by the U.S. EPA Region 5 Underground Injection Control (UIC) Program. To contact them, use U.S. EPA UIC's online form or call (312) 886-1492.
Under some limited circumstances, such as wastewater discharges directly into the ground, an IDEM-issued State Operation Permit may be required. They are issued at the discretion of the IDEM Commissioner where a discharge may pose a threat to human health or the environment.
Questions about discharges into the ground may be directed to IDEM’s Office of Water Quality at (800) 451-6027, extension 2-8706 or (317) 232-8706.