Section 12-5231 - Interlocal cooperation; limitations(a) One or more cities or one or more counties or cities and counties may join together or cooperate with one another in the exercise, either jointly or otherwise, of any one or more of the powers conferred upon cities and counties under this act. Such joint or cooperative action shall be taken only in accordance with and pursuant to a written agreement entered into between or among such cooperating cities or counties in such form approved by the governing bodies thereof.(b) In no event, however, shall any county or counties engage in any act or exercise any of the authority or powers conferred by this act within, or with respect to any property located within, the corporate boundaries of any city in the absence of an agreement with such city.L. 1982, ch. 60, § 13; L. 1983, ch. 71, § 6; May 5.