Mo. Rev. Stat. § 323.050
Current with changes from the 2023 Legislative Session
No city, town, village, fire district, county, or other political subdivision shall adopt or enforce any ordinance or regulation in conflict with the provisions of this chapter, or with the regulations promulgated under section 323.020. Nothing in this section shall prohibit any political subdivision from establishing a licensing requirement for persons relating to the installation, repair, replacement, or maintenance of liquefied petroleum gas and all other fuel gas piping systems.
§ 323.050, RSMo