AN ORDINANCE REQUIRING OPERATORS, OWNERS, OR PROPRIETORS OF RESTAURANTS, FAST FOOD CHAINS, CANTEENS, FOOD COURTS, CARENDERIAS, BARS, MOBILE FOOD CARTS, AND OTHER SIMILAR ESTABLISHMENTS OPERATING WITHIN NAGA CITY TO PUT-UP A POTABLE DRINKING WATER SYSTEM ACCESSIBLE TO THE CUSTOMERS, OR SERVE THE SAME WITHOUT COST, AND PROVIDING PENALTIES THEREFOR