(A) Whenever either a main sewer or trunk sewer or service sewer has been constructed for which the cost has not been apportioned against property which may be benefitted thereby as provided by this chapter, or SDCL Chapter 9-43, the municipality may require the owner of the property to pay its proportionate share of the cost of such construction, without interest, according to the benefits to accrue to such property before the property may be platted, replatted, or served by the facilities, as determined by the municipality.
(B) The municipality shall investigate and determine the amount to be paid. The amount shall be apportioned by the municipality among the persons, including the municipality, paying the appropriate cost.
(SDCL § 9-48-15)