What is the best way to avoid cross-connections in irrigation systems?

The best way to avoid cross-connections in irrigation systems is to install approved backflow preventers. These devices are specifically designed to prevent the reverse flow of water, ensuring that contaminated water cannot flow back into the clean water supply. Cross-connections occur when there is a direct connection between potable (drinkable) and non-potable (non-drinkable) water systems, which poses significant health risks if non-potable water enters the potable supply. Approved backflow preventers are often required by local and state regulations, as they effectively safeguard public health by maintaining the integrity of the drinking water supply.

While other methods such as installing conventional valves or using temporary barriers may help manage water flow in certain situations, they do not provide the same level of protection against backflow. Keeping potable and non-potable water lines within a certain distance, such as 6 inches, may still leave room for potential cross-connections and contamination to occur. Only approved backflow preventers offer a reliable and consistent method for preventing dangerous cross-connections within irrigation systems.