# State of Michigan Underground Injection Control (UIC) Class II Program; Primacy Approval
> **Rule** · Direct final rule. · Published 2021-03-19 · Effective 2021-06-17 · 86 FR 14846
## Document
- **Document number:** 2021-05435
- **Category:** water-quality
- **Federal Register citation:** 86 FR 14846
- **CFR reference:** 40 CFR 147
- **Publication date:** 2021-03-19
- **Effective date:** 2021-06-17
- **State:** MI
- **EPA docket:** EPA-HQ-OW-2020-0595
## Abstract

The U.S. Environmental Protection Agency (EPA or Agency) is taking direct final action to approve the State of Michigan's Underground Injection Control Class II (UIC) Program for primacy. EPA has determined that the State's program is consistent with the provisions of the Safe Drinking Water Act (SDWA) at Section 1425 to prevent underground injection activities that endanger underground sources of drinking water. EPA's approval allows Michigan to implement and enforce its state regulations for UIC Class II injection wells located within the State. Michigan's authority excludes the regulation of injection well Classes I, III, IV, V, and VI, and all wells in Indian country, as required by rule under the SDWA.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2021/03/19/2021-05435/state-of-michigan-underground-injection-control-uic-class-ii-program-primacy-approval)
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