Mo. Rev. Stat. § 192.290: State regulations supersede local rules — additional local rules.

All rules and regulations authorized and made by the department of health and senior services in accordance with this chapter shall supersede as to those matters to which this chapter relates, all local ordinances, rules and regulations and shall be observed throughout the state and enforced by all local and state health authorities. Nothing herein shall limit the right of local authorities to make such further ordinances, rules and regulations not inconsistent with the rules and regulations prescribed by the department of health and senior services which may be necessary for the particular locality under the jurisdiction of such local authorities.