In case of shortage of water, the utility may give preference in furnishing water to customers, in order most effectively to safeguard the safety and health of the general public or to provide for the public convenience, may forbid, restrict, or regulate the use of water for irrigation, cooling, or other uses, may make the regulations effective throughout the city, the districts thereof, or may make the regulations effective as to particular classes of customers. Rationing may be imposed during any shortage of water, either in lieu of or in addition to other measures hereby authorized. (Ord. 780 § 1, 1975; Ord. 416 § 4.03, 1968)