The top contender against PEX plumbing systems is Copper. The main reason for this is because of the durability of copper. It’s resistant to bacteria, corrosion, and ultraviolet rays. However, copper plumbing is far more expensive and requires much more time to have installed. PEX plumbing is flexible, durable, and cost effective, so you are getting quality plumbing materials at low cost, and you pay even less for labor to have your local San Clemente repiping experts to install it.