S.D. Codified Laws § 46A-3E-6 (2026)
A special assessment by a water development district is effective thirty days after adoption of the resolution of intent to specially assess, unless a written protest is filed with the district within thirty days after adoption of the resolution, excluding the date of adoption. The written protest must be in the form of a petition, signed by at least sixty percent of the owners of real property described in the resolution of intent to specially assess.
Source: SL 1984 (SS), ch 1 , § 50; SL 1986, ch 375 , § 2; SL 1987, ch 333 , § 2; SL 2025, ch 186 , § 57.