Backflow Prevention Practice Exam

What is one of the primary purposes of a backflow preventer?

1. To measure water flow

2. To prevent contamination of potable water

3. To regulate water pressure

4. To store water for emergencies

The correct answer is: To prevent contamination of potable water

One of the primary purposes of a backflow preventer is to prevent contamination of potable water. Backflow preventers are essential devices that ensure the safe and clean supply of drinking water by stopping any backward flow of potentially contaminated water into the public water supply. This is especially important in systems where there could be a risk of pollutants or non-potable water sources mixing with the drinking water supply, which could lead to serious health hazards. In contrast, measuring water flow, regulating water pressure, or storing water for emergencies are not functions associated with a backflow preventer. While these elements play important roles in a water supply system, they do not address the specific issue of protecting potable water from contamination. Therefore, the clear and significant focus of backflow preventers is on safeguarding drinking water quality, making the prevention of contamination their primary purpose.