What issue may arise if backflow preventers are not properly tested?

Backflow preventers are critical devices designed to prevent contaminated water from flowing backward into the clean water supply. If these devices are not properly tested and maintained, they may fail to operate as intended when there is a pressure change in the system. This failure can lead to water supply contamination, posing serious health risks to the public.

When backflow occurs, harmful substances, pathogens, and pollutants from non-potable sources can enter the potable water supply, leading to a range of potential health hazards. This makes the regular testing of backflow preventers essential in protecting drinking water quality and ensuring the safety of the water supply. The importance of maintaining these devices cannot be overstated, as they play a vital role in public health protection.