What condition may occur due to a cross-connection?

A cross-connection occurs when a potable (drinking) water supply is linked with a non-potable source, which creates the risk of contamination due to backflow. This situation may arise in various scenarios, such as when a hose is submerged in a contaminated source like a cleaning solution or irrigation ditch. If pressure changes occur in the water supply system, it can draw contaminated water back into the clean water supply, leading to serious health risks for consumers.

Contaminated water can introduce harmful bacteria, chemicals, or other pollutants into the potable water system, which can then be consumed unknowingly by individuals using the water. This highlights the importance of proper plumbing practices, including the use of backflow prevention devices, to safeguard public health and maintain the integrity of the water supply.

In cases of increased water pressure, pipe damage, or drain clogs, those may occur within a plumbing system due to separate issues such as blockages or wear and tear, but they do not necessarily relate to the specific health risks posed by a cross-connection. Therefore, water contamination is uniquely associated with cross-connections and underscores the critical need for preventative measures in plumbing systems.