Wis. Stat. § 229.477: Dissolution of a district.

Subject to providing for the payment of its bonds, including interest on the bonds, and the performance of its other contractual obligations, a district may be dissolved by the joint action of the district’s board of directors and sponsoring municipality. If the district is dissolved, the property of the district that does not include sports and entertainment arena facilities shall be transferred to its sponsoring municipality. Subject to the terms of any lease under s. 229.461 (3), the property of the district that does include sports and entertainment arena facilities shall be transferred to the local units of government that compose the district’s jurisdiction in such proportions as the secretary of administration determines fairly and reasonably represent the contributions of each local unit of government to the development, construction, operation, maintenance, or improvement of the property that contains sports and entertainment arena facilities. If the district was created by more than one sponsoring municipality, the municipalities shall agree on the apportioning of the district’s property before the district may be dissolved.