What is the primary purpose of installing backflow prevention devices in a cold water system?

• A. To improve water taste.
• B. To prevent backflow and potential contamination.
• C. To reduce water pressure.
• D. To simplify maintenance.

Answer: (B)

The essential idea is to protect the drinking water by stopping any reverse flow into the cold water supply. A backflow prevention device acts as a barrier that prevents water from flowing backward if downstream conditions cause a siphon or pressure change. This stops contaminants or non-potable water from entering the mains, safeguarding health and meeting safety codes. The other options don’t address this health risk: taste, pressure changes, or maintenance ease aren’t the primary purpose of these devices.