What is the effect of backflow in a distribution system?

Backflow in a distribution system occurs when water flows in the opposite direction than intended, which can happen due to changes in pressure, such as a sudden drop in system pressure or a malfunction in equipment. The primary concern with backflow is that it can lead to contamination of the potable water supply. When non-potable water sources, such as irrigation systems, pools, or industrial water, are connected improperly or if back pressure is created, these sources can enter the drinking water supply. This contamination poses serious health risks, as it can introduce harmful pathogens, chemicals, and pollutants into the water consumed by the public. Therefore, it is crucial to implement backflow prevention measures to ensure the safety and quality of the water supply.