Colo. Rev. Stat. § 37-90-135
If there are no debts outstanding, the board of directors may, on its own motion or on the written petition of twenty percent of the taxpaying electors of the district, request of the ground water commission that the question of dissolution of such district be submitted to the electors of the district. The commission shall fix the date of such election, notice of which shall be given and which shall be conducted in the same manner as elections for the formation of such districts. If a majority of those voting on such question vote in favor of dissolution, the commission shall so certify to the county clerk and recorders of the counties involved and the district shall thereupon be dissolved. The question of dissolution shall not be submitted more often than once every twelve months. In case a district is dissolved the funds on hand or to be collected shall be held by the treasurer, and the directors shall petition the district court of the county in which the main office is located for an order approving the distribution of funds to the taxpayers of the district on the same basis as collected.
C.R.S. § 37-90-135