The Director of Public Service shall have charge of all public works and improvements and the construction thereof, and of all engineering and inspection in connection therewith. He shall be charged with the construction, improvement, repair and maintenance of streets, sidewalks, alleys, lanes, bridges, wharves, docks, and breakwalls; of water mains, pumps, systems, pipes, purification and filtration plants, and the water distribution systems, of sewers, sewage system, drains, ditches, culverts streams, water courses and harbors, and of all public buildings, parks, playgrounds, cemeteries, and other public places belonging to the Municipality dedicated to public use. He shall manage and control cemeteries, market houses, sewage treatment plants, water works, and all public utilities of the Municipality, owned or operated in whole or in part by the Municipality, and shall enforce all the obligations of privately owned or operated public utilities enforceable by the Municipality.