If the temporary commissioners recommend in their report that the district be organized and report that there is land which will be benefited by the proposed work lying outside of the proposed district but within another drainage district or a municipal corporation exercising drainage powers, then such district or municipal corporation may be made a party defendant in the proceedings. Summons shall be issued and served as in other civil cases. If the summons is not served at least 30 days before the date fixed for the hearing, then the court shall continue the hearing to a day not less than 30 days after such service.
70 ILCS 605/3-19