It shall be the duty of each association of municipal corporations or municipal officers, which is recognized by law and utilized as an official agency for the coordination of the policies and/or administrative programs of municipal corporations, to submit biennially, or oftener as necessary, to the governor and to the legislature the joint recommendations of such participating municipalities regarding changes which would affect the efficiency of such municipal corporations. Such associations shall include but shall not be limited to the Washington state association of fire commissioners and the Washington state school directors' association.