Wyo. Stat. § 41-6-105: Withdrawal from joint operations.

The commissioners of any district belonging to any association formed hereunder, may at any time submit to the qualified electors of their district the question as to whether or not the district shall withdraw from such association. Such election shall be held as above provided, and if in any case, the vote shall be in favor of withdrawal, the result thereof shall be duly certified to the proper court, and notice thereof served upon the other districts involved. Thereupon such withdrawal will become operative on the first day of the second December following such election, and thereafter the provisions of this act shall be applicable to such district.

Division 2. Board of District Managers