The boundaries of any ambulance district organized under the provisions of this chapter may be changed in the manner prescribed for establishment of a district, or the board of directors of an ambulance district may submit a proposed decrease in the size of the district to voters at an annual or special meeting. However, the change of boundaries of a district does not impair or affect the district's organization or right in or to property; nor does the change of boundaries impair, affect, or discharge any contract, obligation, lien, or change for or upon which the district may be liable had the change of boundaries not been made.
SDCL 34-11A-28