Mich. Comp. Laws § 460.811

Sec. 11. A municipality engaging in a joint venture, joint agency agreement, or other joint endeavor described in section 10 and authorized by article 2 or article 3 shall own a percentage of any common facility equal to the percentage of the money furnished or the value of the property supplied by the municipality for the acquisition and construction of the common facility, except in the case of a facility at least 2/3 of which is owned or to be owned by a state, a political subdivision of this or another state or a Canadian province, an agency of this or another state or of a political subdivision of this state or another state, a federal agency, or a Canadian federal or provincial agency or agency of a political subdivision of a Canadian province, or any corporation or other entity controlled directly or indirectly by 1 or more of the entities listed above, in which case ownership shall be as provided in the contract between the municipality or joint agency and the entity owning or to own at least 2/3 of the facility. Each municipality in a joint endeavor shall defray its own interest and other payments required to be made in connection with a financing undertaken by it to pay its own percentage of the money furnished or the value of the property supplied by it for the planning, acquisition, and construction of a common facility, or an addition or betterment to the common facility. The agreement shall provide a uniform method of determining and allocating operation and maintenance expenses of the joint facility or agency.