Final answer:
To check the water temperature in high-temp dishwashers, you can use a manual thermometer or rely on the built-in temperature display on the machine.
Step-by-step explanation:
There are two ways to check the water temperature in high-temperature dishwashers to ensure that it reaches a sufficient level to kill any bacteria present. The first method is by using a thermometer, which can be either built-in or a manual one inserted into the dishwasher. The second method is by checking the temperature display on the dishwasher, if it is equipped with such a feature. It is important to keep an eye on the temperature to maintain health and safety standards.