South Dakota Codified Laws — Title 10 (Taxation)
SDCL § 10-21-20 — Treasurer to sign plat certifying payment in full of taxes on platted real property
After payment in full of all taxes on any real property which has been subdivided, rearranged, or platted into lots, the treasurer shall sign the plat to certify that all taxes have been paid in full.
Source: official text