All water cooling systems having total capacities exceeding one and one-half (11/2) tons per hour shall be equipped with evaporative condensers, cooling towers, spray ponds, or other approved water conservation equipment. In the event that a critical condition develops in the public water supply system, all installations not equipped to conserve water as herein provided shall be subject to immediate discontinuance on orders of the city. (Ord. 37-95 § 31, 1995: amended during 1/88 supplement: prior code § 5-12-4)