Michigan Compiled Laws, Chapter 324. Natural Resources and Environmental Protection § 324.9113

Sec. 9113.  (1) Notwithstanding the existence or pursuit of any other remedy, the department or a county enforcing agency or municipal enforcing agency may maintain an action in its own name in a court of competent jurisdiction for an injunction or other process against a person to restrain or prevent violations of this part.

(2) At any reasonable time, an agent appointed by the department, a county enforcing agency, or a municipal enforcing agency may enter upon any private or public property for the purpose of inspecting and investigating conditions or practices that may be in violation of this part.  However, an investigation or inspection under this subsection shall comply with the United States constitution and the state constitution of 1963.