The governing body of a municipality may by ordinance adopted by a two-thirds vote of all of its members, establish within its territorial limits a storm sewer improvement tax district. The ordinance shall describe with particularity the territory or area within the municipality to be included within the district. No such ordinance shall be adopted until after a public hearing has been held on the question. A notice of the time, place and purpose of the hearing shall be published for two successive weeks in the official newspaper of the municipality or in a qualified newspaper of general circulation in the municipality and the last notice shall be at least seven days prior to the day of the hearing. The ordinance when adopted shall be recorded with the county auditor and county recorder.