While PEX is generally considered a safe product and accepted by building codes, the materials and components that comprise the system have several vulnerabilities, and several defective fittings and systems produced by various manufacturers have resulted in leaks and system failures. …

Is PEX plumbing bad for you?

The study showed: There are no health risks associated with drinking water from PEX pipes. A few types of PEX-pipe may cause prolonged undesirable taste and odour if the water remains in pipes over time.

How long does a PEX piping last?

Additionally, long-term testing programs on PEX have shown that it has a potential lifespan of more than 100 years. So, while copper systems may have to be re-piped every few years or decades due to corrosion and pinhole leaks, a PEX system can last 10 times longer — or more.