All public utility companies operating in the City of Heath, Texas, are required to place and locate new pipes, lines, wire, equipment and other appurtenances underground within the present and future public streets, avenues, alleys, public grounds and ways for the purposes of laying, maintaining, constructing, operating and replacing the same for the supplying of public utilities to the citizens of the City of Heath.
(2005 Code, § 17-1-1)