Final answer:
John should be using a designated mop sink to fill buckets and wash cleaning tools, as Harry, the manager, reminded him.
Step-by-step explanation:
Harry, the manager, observes John filling the mop bucket from the handwashing sink and reminds him that he should fill buckets and wash cleaning tools only in a designated mop sink. Using a designated mop sink is essential for maintaining sanitary conditions in a food service environment, preventing cross-contamination, and adhering to health regulations. It is important for employees to understand and follow these guidelines to ensure the safety and cleanliness of the restaurant.
The handwashing sink and other sinks in a food establishment are specifically designated for handwashing purposes, and using them to fill mop buckets would contaminate the sinks and risk cross-contamination of food and surfaces. The best practice is to use a designated mop sink for filling buckets and washing cleaning tools.