S.D. Codified Laws § 44-13-1
Whenever any county or municipality has entered into an agreement with any such other governmental subdivision or other person duly qualified and licensed to perform such services, and counties or municipalities become obligated to and do pay toward the maintenance of such ambulance service, the county or municipality providing ambulance service under the provisions of § 34-11-1, to the extent it is chargeable against that person shall have a lien upon all property both real and personal belonging to any person receiving such ambulance service; such lien, to the extent of reasonable and necessary charges for furnishing such service, shall extend to property held in joint tenancy including homestead interests, as well as property hereafter acquired or in which the person receiving such ambulance service has any interest.
SDCL 44-13-1