The Director of Public Service shall be the head of the Department of Public Service and shall be appointed by the Mayor, subject to confirmation of 2/3 vote of all the members elected to the Council.  He may be removed from office by the Mayor, but such removal shall not take place without the concurrence of 2/3 of all the members elected to the Council, provided however, that if the Mayor acts as Service Director, the Council may, with the concurrence of 2/3 of all the members elected to the Council, remove him as such Service Director, and thereupon another Service Director shall be appointed.  The Director of Public Service shall have charge of all public works and improvements and the construction thereof, and 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 system; of sewers, sewage systems, drains, ditches, culverts, streams, water courses and harbors; and of all public buildings, parks, playgrounds, cemeteries, and other public grounds.  He shall manage and control cemeteries, market houses, sewage treatment plants, water works, and all public utilities owned by the Municipality and shall enforce all the obligations of privately owned and operated public utilities enforceable by the Municipality.  He shall have charge of the preservation and care of all surveys, maps, plans, drawings and estimates for public work; the cleaning, resurfacing, repairing, sprinkling and lighting of streets and public places; the collection and disposal of waste; and the preservation of all property belonging to the Municipality and pertaining to the functions thereof.  He shall perform such other duties, consistent with his office, as may be required by this Charter, by ordinance of the Council, or as directed by the Mayor.