What is a consequence of backpressure in a backflow situation?

In a backflow scenario, backpressure is a condition where the pressure in the distribution system exceeds the pressure in the supply system, potentially causing fluid to flow in the reverse direction. This reverse flow can lead to contaminated water running back into the potable water supply, which is why understanding backpressure is crucial in the context of backflow prevention.

Recognizing that fluid may flow in the reverse direction due to backpressure highlights the need for effective backflow prevention methods, such as backflow preventers or air gaps, to ensure that drinking water remains uncontaminated. The implications of backpressure are significant, as it is a primary driver for certain risks associated with backflow, specifically the potential introduction of hazardous substances into a public water system.