Iowa Code § 358C.21
When a majority of the board of trustees of a district desire that the district be wholly dissolved, the trustees shall first propose a resolution declaring the advisability of the dissolution and setting out the terms and conditions of the dissolution, and also setting out the time and place when the board of trustees shall meet to consider the adoption of the resolution. Notice of the time and place when the resolution shall be set for consideration shall be published as provided in section 331.305, which publication shall contain the entire wording of the proposed resolution. If any part of the district lies within the area of the jurisdiction of a city, then the trustees shall mail a copy of the proposed resolution to the city on the date of first publication of the resolution. At the hearing the owners of property within the district, or a city if any part of the district lies within the city, may appear and make objections to the proposed resolution. If the owners representing a majority of the area of real estate within the district fail to sign and present to the board, on or prior to the hearing date, a written petition opposing the resolution, a majority of the board of trustees may pass the resolution and adopt the proposed dissolution. However, the resolution shall not be adopted if the district is obligated on any outstanding bonds, warrants, or other debts or obligations unless the holders of the bonds, warrants, or other debts or obligations all sign written consents to the dissolution prior to the adoption of the resolution of dissolution. If the petition opposing the resolution is signed by property owners representing a majority of the area of real estate within the district and presented to the board of trustees on or prior to the hearing date, the board of trustees shall not adopt the resolution. After the board of trustees has adopted the resolution of dissolution, the clerk of the district shall prepare and file a certified copy of the resolution of dissolution in the office of the county auditor where the original petition was filed. A district shall dissolve within ninety days following the merger of a district with a city.
Iowa Code § 358C.21
95 Acts, ch 200, §21