What is the primary reason for legislating the testing of backflow preventers?

The primary reason for legislating the testing of backflow preventers is to ensure public health and safety. Backflow preventers are crucial devices in plumbing systems that prevent contaminated water from flowing backward into the clean water supply. This backward flow can occur due to changes in pressure within the plumbing system and can introduce harmful pollutants or pathogens into the potable water supply. Therefore, regular testing and maintenance of these devices are mandated to protect public health by ensuring that drinking water remains safe and free from contaminants. This legislation reflects a commitment to safeguarding the community from potential health hazards associated with backflow contamination.