South Dakota Codified Laws — Title 10 (Taxation)
SDCL § 10-38-28 — Special assessment collection procedure applicable to past delinquencies
Sections 10-38-23 to 10-38-27 , inclusive, shall apply to the enforcement and collection of all delinquent special assessments or taxes that may have heretofore become delinquent, as well as to all special assessments or taxes which shall hereafter become delinquent.
Source: official text