S.D. Codified Laws § 9-47-3
Wherever, in any municipality, the emergency specified in § 9-21-15 is the complete failure of the water supply of such municipality, the governing body thereof is authorized to contract for the drilling of a new well or for such repairs, replacements, and new equipment as may be necessary, privately, without advertising for bids as required by the laws of this state relating to contracts of municipalities, and to pay therefor as provided in §§ 9-21-15 and 9-21-16 as to emergencies; provided, however, that no such contract shall be executed until the governing body has adopted a resolution of necessity therefor, by unanimous vote, which resolution shall become effective immediately upon its passage and publication.
Any contract entered into as provided by this section shall be as binding, and have the same force and effect, as though the same were let in all particulars as provided by the laws of this state relating to contracts of municipalities.
SDCL 9-47-3