The Department of Agriculture and Natural Resources shall, in compliance with chapter 1-26 , promulgate rules relating to the fluoridation of public water supplies which shall include, but not be limited to the following: (1) The means by which fluoride is controlled; (2) The methods of testing the fluoride content; and (3) The records to be kept relating to fluoridation. Source: SL 1969, ch 112 ; SL 1972, ch 15 , § 4; SL 1986, ch 295 , § 3; SL 1991, ch 17 (Ex. Ord. 91-4), § 17; SL 2021, ch 1 (Ex. Ord. 21-3 ), § 14, eff. Apr. 19, 2021.