The legislature finds that the development of integrated and coordinated solid waste management systems is needed to manage properly the solid waste generated in the state, to conserve and protect the natural resources in the state and the health, safety, and welfare of its citizens, and to further the state policies and purposes expressed in section 115A.02; that this need cannot always be met solely by the activities of individual political subdivisions or by agreements among subdivisions; and that therefore it is necessary to establish a procedure for the creation of solid waste management districts having the powers and performing the functions prescribed in sections 115A.62 to 115A.72.