Iowa Code § 358C.22
2. The owner of a discrete tract of land which is part of a district but which is not connected to the main area of the district may petition the board of trustees of the district to have the property detached from the district. Following receipt of the petition, the board of trustees shall propose a resolution declaring the advisability of the detachment and setting out the terms and conditions of the detachment and setting out the time and place when the board of trustees will meet to consider the adoption of the resolution. Notice of the time and place for the consideration shall be published as provided in subsection 1. If any part of the district lies in whole or in part within a city, the board of trustees shall mail a copy of the proposed resolution to the municipality within five days after the date of first publication of the resolution. At the hearing for consideration of the resolution, the board of trustees shall determine if the tract of land proposed for detachment has all of the following characteristics:
95 Acts, ch 200, §22