What is a cross connection in plumbing?

A cross connection in plumbing refers to a physical connection between potable (drinking) water and a source of contamination. This situation poses a significant health risk, as it can allow contaminants, such as chemicals, bacteria, or other harmful substances, to enter the safe drinking water supply. This type of scenario is particularly concerning in settings where water systems are subject to backflow, which can occur due to changes in pressure or the use of certain fixtures.

Understanding cross connections is critical in food safety management, as ensuring the integrity of potable water is vital for preventing waterborne diseases and maintaining overall public health. Effective plumbing practices and proper installation of backflow prevention devices are key measures to avoid cross connections and protect the drinking water supply.