What condition can increase the risk of backsiphonage in a water system?

Reduced water pressure in a water system can create a situation where backsiphonage is more likely to occur. Backsiphonage happens when there is a negative pressure in a water supply system, causing water from other sources (including potentially contaminated sources) to be drawn back into the clean water system.

When the pressure within the water distribution system drops, it can create a vacuum effect, pulling in undesirable substances from nearby sources, such as open bodies of water, soil, or even plumbing systems that might not be properly secured. This is particularly risk-prone in situations where there are cross-connections between potable water and non-potable sources. Reducing water pressure can occur due to various events, such as high demand periods, broken pipes, or other issues that compromise the integrity of the system. Thus, maintaining stable and adequate water pressure is crucial in preventing backsiphonage and protecting water quality.

High temperature and regular maintenance would not typically lead to backsiphonage risks, while increased water pressure tends to push water away from potential contamination sources rather than drawing it in.