Which piping material is commonly used for cold water lines?

The choice of piping material commonly used for cold water lines is PVC (Polyvinyl Chloride). PVC is favored for its durability, lightweight nature, ease of installation, and cost-effectiveness. It does not corrode, which is a crucial feature for cold water applications, helping to maintain water quality over time. Additionally, PVC is resistant to various chemicals, making it suitable for different types of water.

While PEX (Cross-Linked Polyethylene) is also used for cold water lines and has advantages in terms of flexibility and ease of installation, PVC remains the traditional and widely recognized standard for such applications. CPVC (Chlorinated Polyvinyl Chloride) is more typically used for hot water lines due to its higher temperature tolerance. Cast iron is primarily used for drainage, waste, and vent systems rather than for cold water distribution.