What is backsiphonage?

Backsiphonage refers specifically to a situation where a negative or sub-atmospheric pressure occurs in a plumbing or irrigation system, leading to the reverse flow of water. This phenomenon can create a pathway for contaminants to enter potable water supplies, making it vital to understand and prevent in irrigation practices. Such conditions often arise when there is a sudden drop in water pressure which could be caused by various factors, such as a nearby fire hydrant being opened or a sudden increase in demand on the water supply system.

Recognizing backsiphonage is crucial for irrigation professionals, as it informs them about proper system design and the installation of backflow prevention mechanisms. These safety measures prevent the contamination of clean water, ensuring that the irrigation system operates effectively without compromising water quality. Understanding this concept is fundamental for maintaining safe and effective irrigation systems that adhere to local regulations and standards.