Mich. Comp. Laws § 123.641

Sec. 1. The boards of supervisors of any 2 or more counties, by resolution, may establish and organize an intercounty committee, to be known as the supervisors' intercounty committee, for the purpose of studying area governmental problems of mutual interest and concern, including such matters as facility studies on sewers and sewage disposal, water, drains, roads, rubbish and garbage disposal, recreation, zoning, parks and ports, and to formulate recommendations for review and action thereon by the member county boards of supervisors.