Cross Connection Practice Exam

What potential hazard should be considered when employing a Pressure Vacuum Breaker Assembly?

1. Overheating of fluid

2. Contamination due to backsiphonage

3. Ownership disputes

4. Physical damage

The correct answer is: Contamination due to backsiphonage

When using a Pressure Vacuum Breaker Assembly, the primary concern revolves around contamination that can occur from backsiphonage. A Pressure Vacuum Breaker is specifically designed to prevent backflow in plumbing systems, which can happen when a drop in pressure causes contaminated water to be siphoned back into the potable water supply. This is an essential protective feature because it safeguards drinking water from substances that could be harmful if ingested. The unique design of this assembly allows it to open and release pressure, preventing negative pressure from drawing contaminant-laden water back into the clean water system. If not properly installed or maintained, or if the assembly fails, there is a heightened risk of backsiphonage occurring, which could lead to significant public health issues due to potential contamination. Considering the other options, issues like overheating of fluid, ownership disputes, and physical damage are relevant in broader plumbing contexts, but they do not directly relate to the primary function and concern of a Pressure Vacuum Breaker. The focus of the assembly is specifically geared toward preventing backsiphonage and ensuring the safety and integrity of the water supply, highlighting why contamination due to backsiphonage is the key hazard that should be considered.