What does backflow refer to in a water supply system?

Backflow specifically refers to the unintended reverse flow of non-potable water or contaminants into a potable water supply, which poses significant health risks. This situation can occur due to a change in pressure within the water system, allowing contaminants to enter the clean water supply. Backflow can cause serious public health issues, such as the spread of waterborne diseases, making it critical to implement proper backflow prevention measures within water systems.

Understanding backflow is essential for food safety in food service operations, as it can lead to contamination of water used for cooking, cleaning, or food preparation. By identifying and controlling backflow risks, food managers can ensure compliance with health regulations and protect the health of consumers.