What type of pipe is most commonly used for residential water supply?

• A. Plastic pipe
• B. Copper pipe
• C. Cast iron pipe
• D. PVC pipe

Answer: (B)

The most commonly used type of pipe for residential water supply is copper pipe. This material is favored for several reasons, particularly its durability and high resistance to corrosion. Copper has a long lifespan, which means it can provide reliable water delivery for many years without needing frequent replacement. It also handles high temperatures and pressures effectively, making it suitable for both hot and cold water systems.

Additionally, copper piping has natural antimicrobial properties, which can help in maintaining water quality by reducing the presence of bacteria. It can also be easily shaped and fitted, allowing for flexible installation options in various household configurations.

While other types of pipe, such as plastic and PVC, are used for specific plumbing applications, copper remains the preferred choice for main water supply lines in residential settings due to its proven performance and reliability.