State of Michigan, UIC Class II Program Approval - Final Rule
The EPA has approved Michigan's application to obtain primacy for Class II wells under the UIC program. After conducting a thorough review, proposed rulemaking, and public comment period, EPA has determined that the State’s program is consistent with the provisions of the Safe Drinking Water Act (SDWA) to prevent underground injection activities that endanger underground sources of drinking water.
EPA’s approval allows Michigan to implement and enforce the State’s regulations for Class II UIC wells, which cover oil and gas related injection well activities. EPA will remain the permitting authority for all other UIC well classes in Michigan and the sole permitting authority for all UIC well classes in Indian country within the State. EPA will also oversee Michigan’s administration of the State’s UIC Class II program as authorized under SDWA.
The final rule approving Class II primacy for Michigan is available on the Federal Register at:
As part of the final rule, EPA has responded to public comments received on the proposed rule that was published on March 19, 2021. The response document can be found on the federal docket associated with the rule and below.