What does cross-connection control aim to prevent?

Cross-connection control primarily aims to prevent backflow between potable (safe for drinking) and non-potable (potentially unsafe) water sources. This is crucial because backflow can occur if there is a sudden drop in water pressure, allowing contaminated water to flow back into the clean water supply, which can lead to significant public health risks. Establishing effective cross-connection control measures helps ensure that the integrity of the drinking water supply remains intact and free from contamination.

Addressing the other options, while water loss, contamination due to leaks, and corrosion are important components of water supply management, they do not specifically target the risks associated with the interaction between potable and non-potable sources. Contamination from leaks pertains more to the physical integrity of pipes, but cross-connections specifically deal with the risk of backflow, keeping the drinking water supply safe from external contaminants.