Wyo. Stat. § 41-10-153
Upon the annexation of such territory the securities of the district, including but not limited to short-term notes, general obligation bonds and other like securities, revenue bonds and other like securities, special assessment bonds and other like securities shall remain the obligations of the districts and the districts shall remain in possession, ownership and operation of its equipment, plant and facilities. The subscribers of the services of such district shall continue to be served by the districts. The taxing power and authority of the districts shall continue and shall be in addition to any taxing authority of the annexing city or town. A properly filed map showing the overlapping authorities shall be deemed compliant with the provisions of W.S. 39-13-102(p).
W.S. 41-10-153