Most People Fail This Plumbing Quiz — Can You Pass?
Which pipe is most commonly used for residential cold water supply?
50%
Correct!
Incorrect!
PEX is flexible, easy to install, and widely used for cold water supply lines. People often assume copper or PVC is always used, but PEX saves labor and fittings and can even bend around corners in some cases. Labeling pipes for easy identification makes future maintenance much simpler.
Which pipe is most commonly used for residential cold water supply?
Copper
PVC
Steel
PEX
50%
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