Mo. Rev. Stat. § 67.1848: Sewer and water lines in public roads, when permitted, limitations and requirements.

All public water supply districts, sewer districts, and municipalities, including villages, shall have the right to lay, install, construct, repair, and maintain sewer and water lines in public highways, roads, streets, and alleys, subject to the reasonable rules and regulations of governmental bodies having jurisdiction of such public places. Due regard shall be taken for the rights of the public in its use of thoroughfares and equal rights of other utilities thereto.