What does New Jersey law require regarding the use of check valves?

New Jersey law requires the use of check valves to prevent back siphonage, which is a critical safety measure in pest control and irrigation practices. Back siphonage can occur when there is a sudden drop in water pressure, potentially causing contaminated water to flow back into the clean water supply. By implementing check valves, the system is designed to maintain directionality in water flow, thereby protecting potable water sources from contamination and ensuring compliance with health regulations.

This requirement is particularly important in pest management practices that involve mixing chemicals and applying them through water systems, as it helps to safeguard public health and the environment. Therefore, the law makes it clear that the installation of check valves is not merely a suggestion but a necessary precaution in various applications.