What is backsiphonage?

Backsiphonage is a specific condition that occurs when there is a reduction in water pressure within a piping system, causing a vacuum effect that can draw contaminants into the potable water supply. This phenomenon can happen due to various factors, such as a sudden drop in pressure caused by a water main break or when large quantities of water are drawn from a system, which can create suction that pulls potentially hazardous materials from nearby sources into clean water lines.

Understanding backsiphonage is crucial for water operators, as it highlights the need for proper backflow prevention measures to protect public health. A well-designed backflow prevention system is essential to ensure that contaminants do not inadvertently enter the drinking water supply during such pressure drops. This answer emphasizes the safe management of water resources and the critical importance of maintaining water quality standards in distribution systems.