PVC is the most economical choice for large diameter pipe used in drains and sewers. PVC may affect water taste. Copper is strongest but does require soldering skills to prevent leaks. Galvanized steel is the most difficult to use because all joints must be threaded and pipe lengths become harder to fit.
PVC pipe tends to have a high rate of failure when water over 100 degrees passes through it. Codes in some areas allow it to be used but not for hot water. Also, PVC does not do well in sunlight. It tends to become very brittle. When buying a home or remodeling check the codes in your area.
Hot water is run thru another type of plastic pipe. It\'s called CPVC and is specifically used for hot water use, water heaters, under sink ect.. It\'s sized different but is installed basically the same way PVC is. posted by
wingdog987 (146)
PVC pipe has been a very big deal in the plumbing industry, because it is lighter and easier to work with than traditional galvanized steel pipe.It is used for drain or waste pipes, or stacks and not as supply pipe and requires little more than a hacksaw, miter box, and solvents which essentially "glue" the pipe together.
I have seen it used as water supply lines before. I live in a mobile home park that was built in the 70s with alot of underground pvc water supply. It's been working all this time. And yes it's legal. Not above ground though.