Mich. Comp. Laws § 484.1504

Sec. 504. Within 5 days after receipt of a certified copy of a resolution adopted by a public agency under section 503, the county clerk shall forward the certified copy of the resolution to the service supplier by certified mail, return receipt requested. Within a reasonable time after the service supplier receives the certified copy of the resolution, the service supplier shall commence 9-1-1 service to all or part of the jurisdiction of the public agency, as the case may be, and after commencement of the service shall commence the collection of the state and county 9-1-1 charge, in accordance with this act, from service users within all or part of the jurisdiction of the public agency added to the 9-1-1 service district.