All readily perishable food or drink, including cream pies and puddings, shall be kept at or below 50 degrees Fahrenheit except when being prepared or served, and an indicating thermometer shall be provided. Wastewater from refrigeration equipment shall be properly disposed of and there shall be no direct connection to a sewer. (Ord. 5212 § 1 (Exh. C), 1999; 1957 code § 4.02.240.)