Backflow Prevention Practice Exam

What is required to isolate a plumbing water system hazard?

1. High-hazard protection

2. Building quarantine

3. Appliance protection

4. Meter protection

The correct answer is: Appliance protection

Isolating a plumbing water system hazard requires appropriate measures to ensure that potential contaminants do not enter the potable water supply from appliances. Appliance protection involves using backflow prevention devices or methods specifically designed to prevent the backward flow of water from appliances, such as dishwashers and lawn irrigation systems. These appliances can create hazards if they are not properly protected, as they can introduce pollutants or pathogens into the drinking water system. This focus on appliance protection is crucial in maintaining the overall safety and integrity of the water supply, ensuring that any potential contamination is effectively contained and does not pose a risk to public health. High-hazard protection, building quarantine, and meter protection address different aspects of water system safety but do not specifically target the isolation of hazards at the appliance level. Each of these options serves unique purposes in water management and protection but does not center on directly isolating hazards from appliances as effectively as appliance protection does.