What material is commonly used for residential water supply lines?

Copper and PEX (cross-linked polyethylene) are widely used materials for residential water supply lines due to several advantageous properties. Copper is a well-established choice known for its durability, longevity, and resistance to corrosion. It also has natural antibacterial properties, making it a safe option for potable water systems. PEX has gained popularity because it is flexible, making it easier and faster to install, while also being resistant to scale and chlorine, reducing the risk of corrosion and leaks over time. Additionally, PEX can expand and contract, which helps prevent breakage in freezing temperatures.

Choosing copper or PEX as plumbing materials aligns with industry standards for safety and efficacy in water supply systems, ensuring a reliable and safe source of potable water in residential settings.