Which material is typically associated with plumbing in terms of water supply lines?

Water supply lines in plumbing can be constructed using various materials, with plastic and copper being two of the most common.

Plastic pipes, such as those made from polyvinyl chloride (PVC), cross-linked polyethylene (PEX), or chlorinated polyvinyl chloride (CPVC), are widely used in modern plumbing systems due to their resistance to corrosion, lightweight nature, ease of installation, and minimal thermal conductivity. These characteristics make them suitable for various applications, including both hot and cold water supply lines.

Copper pipes have been a traditional choice for plumbing due to their durability, reliability, and ability to withstand high temperatures and pressures. Copper also has natural antibacterial properties, making it a hygienic option for drinking water systems. The soldering techniques used for joining copper pipes create strong, leak-free connections.

By recognizing that both plastic and copper materials are commonly utilized for water supply lines, the choice of both materials as the correct answer reflects the versatility and range of plumbing materials available for different scenarios and preferences in construction and renovation projects.