What defines a cross-connection?

A cross-connection is defined as a physical link between safe and dirty water. This situation poses a significant health risk, as it can allow for the contamination of safe drinking water sources. For instance, if there’s a direct pathway that enables contaminated water from a source, such as sewage, to mix with potable water, it can lead to serious waterborne illnesses.

Understanding this definition is crucial for maintaining safe water quality in any food service operation. Regular inspections and proper plumbing practices are necessary to prevent cross-connections and protect public health. The other options, while related to plumbing or water systems, do not accurately capture the essence of what a cross-connection entails.