What is required to ensure the potable water system remains uncontaminated?

The installation of systems to prevent backflow is essential to maintain the integrity of a potable water system. Backflow occurs when water flows in the reverse direction, which can happen due to changes in pressure within the plumbing system. This can potentially allow contaminants from non-potable sources—like sewage or chemicals—to enter the clean drinking water supply. Proper backflow prevention devices, such as backflow preventers or vacuum breakers, create a barrier that ensures contaminants cannot flow back into the potable water lines.

Regular testing and filtration are also important for maintaining water quality, but they do not directly prevent the physical occurrence of backflow. Relying solely on bottled water lacks the same level of reliability and convenience for a large establishment’s potable water needs. Thus, robust installation of backflow prevention is critical for safeguarding the water supply from contamination.