Final answer:
The minimal water temperature of the final sanitizing rinse in a high-temperature mechanical dishwasher is 160°F (71°C). This high temperature is necessary to ensure that the dishes are sanitized and all microbes are effectively removed. Commercial dishwashers in the food service industry use hot water and air at this temperature to kill most microbes.
Step-by-step explanation:
The minimal water temperature of the final sanitizing rinse in a high-temperature mechanical dishwasher is 160°F (71°C).
Commercial dishwashers used in the food service industry typically use very hot water and air for washing and drying. The high temperature of the water, at least 160°F, kills most microbes, sanitizing the dishes.
This high temperature is necessary to ensure that the final rinse effectively removes enough microbes to achieve levels deemed safe for public health.