The Department of Service shall be administered by the Director of Service. The Director shall be responsible for the general supervision, custody, care and maintenance of the public buildings, grounds, streets, sewers, Municipal utilities, cemeteries and properties owned or operated by the Municipality for the protection of the health, welfare, convenience and necessity of the people. The Director shall perform such functions and duties with reference to the Department of Service as may be assigned by the Administrative Code or by order of the Manager. (Amended November 2, 1976)