The purpose of a backflow prevention device is to?

• A. Improve water pressure
• B. Prevent contamination of water supply
• C. Regulate water flow
• D. Measure water consumption

Answer: (B)

The purpose of a backflow prevention device is to prevent contamination of the water supply. This device is crucial in maintaining safe drinking water. Backflow can occur when there is a sudden change in water pressure, leading to the undesired reverse flow of water and potentially harmful substances into the potable water system. By installing backflow prevention devices, we ensure that water flows in the intended direction and that contaminants from irrigation systems, industrial discharges, or other sources cannot enter the clean water supply, thereby protecting public health and ensuring compliance with water safety regulations.

In contrast, improving water pressure, regulating water flow, and measuring water consumption do not align with the primary function of backflow prevention devices, which focuses solely on keeping the water supply free from pollutants and ensuring safe water access for all users.