The Director of Service shall have complete charge of the operation of the waterworks, the maintenance, extension and improvement of the water plant, the furnishing of water and the establishment of rates. The Director, subject to the approval of Council, shall make rules and regulations for the management and protection of the waterworks and the governing of water users and others, in their relations with the Division of Water and for the enforcement of tariff rates, and shall classify water services and establish, adjust and regulate the rates charged for the different classes of water services. The present rules, regulations and rates of the Division shall be continued in force and effect until changed by the Director. The rules, regulations and rates or charges which the Director shall from time to time establish, shall be in force and effect immediately upon being approved by Council, which approval shall be made informally, upon motion, shall be entered upon the minutes of Council, but shall not be published.