What does backsiphonage entail?

Backsiphonage involves the reverse flow of water caused by a reduction in pressure within the water supply system, creating a vacuum that draws contaminants into the potable water system. This phenomenon occurs when the pressure in the water supply line drops below atmospheric pressure, which can happen due to various reasons, such as sudden increases in water demand or ruptured pipes. The resulting vacuum effect can pull water, along with any potential contaminants, from adjacent areas or systems into the clean water supply.

Understanding backsiphonage is crucial for maintaining water quality and preventing contamination in irrigation practices and public water systems. This concept highlights the importance of backflow prevention devices, which are necessary to protect against such vulnerabilities in the drinking water distribution system.