The board of commissioners, by resolution adopted by a 2/3 majority of the total authorized votes, prior to the acquisition or construction of a water supply and transmission system, and prior to the issuance of any bonds for such purposes, shall establish an initial schedule of rates and charges for the use of water to be furnished by the system to the governmental units within the corporate limits of the authority. The rates and charges may be fixed and revised from time to time by the board of commissioners within the limitations and conditions provided in the terms of any contract for the sale of water entered into between the authority and the governmental units within the corporate limits of the authority. Moneys derived from the collection of such rates and charges shall be applied and used by the authority in manner following, and in the following priority:
MCL 121.9