Backflow Prevention Practice Exam

Air-gap separations must be ____?

1. Classified

2. Inspected annually

3. Laboratory listed

4. Tested and repaired

The correct answer is: Inspected annually

Air-gap separations must be inspected annually to ensure their effectiveness in preventing backflow. An air gap is a physical separation between the source of contamination and the potable water supply. Regular inspections are critical because they verify that the air gap is maintained correctly, ensuring that no backflow, which can cause contamination of the drinking water supply, occurs. Annual inspections help identify any potential failures or issues, allowing for timely corrective actions to maintain the safety and integrity of the water system. While other aspects of backflow prevention systems are indeed classified, tested, or may need to meet laboratory standards, the recurring requirement to inspect air-gap separations annually stands out as a crucial component in the maintenance of safe water distribution. This practice reinforces the overarching goal of safeguarding public health by ensuring that air gaps function as intended.