Mo. Rev. Stat. § 247.260
247.260 Organization of district, procedure.
247.260. Organization of district, procedure. — The organization of a metropolitan water supply district shall be initiated by a petition filed in the office of the clerk of the circuit court vested with jurisdiction as provided in sections 247.230 to 247.670 . The petition shall be signed by one hundred voters of the district.
(L. 1949 p. 350 § 3, A.L. 1978 H.B. 971)