Ace the Texas Home Inspector Challenge 2026 – Build Your Path to Success!

Modern plumbing systems commonly utilize plastic and copper for a variety of reasons. Copper is favored for its durability, resistance to corrosion, and ability to withstand high temperatures. It has a long history of use in plumbing and is known for its reliability in both residential and commercial applications. Its antimicrobial properties also make it a safe choice for potable water systems.

Plastic materials, such as PVC (polyvinyl chloride) and PEX (cross-linked polyethylene), have gained immense popularity in recent years. These materials are lightweight, easy to install, and resistant to corrosion and scale buildup. PVC is often used for drain, waste, and vent pipes, while PEX is common for water supply lines due to its flexibility and resistance to freezing.

Options involving clay, steel, wood, glass, and rubber do not represent the standard components of modern plumbing systems. While clay was traditionally used in older sewer systems and cast iron has been used for drainage and venting, they are less common in newer installations in favor of the advantages offered by plastic and copper. Understanding these materials is essential for home inspectors as they assess plumbing systems and ensure compliance with current building codes and standards.