[skyking1]

It's a great sales pitch if you are a plumber. All pipe can fail. Even the beloved and highly vaunted PEX tubing.
New plumbing is not a bad idea but the panic is artificially generated.
That said we will probably pull in new PEX when we sell because it won't cost me much and is good for the resale. We also have a 1995 manufactured home with Poly B piping.

 

[skyking1]

PEX was first manufactured in Sweden and has been used in Europe since 1970 and brought to the US is the 80's. It's track record is quite long. I've pour hundreds of heated concrete floors with it with 0 failures.

For me, because of price, workability and dependability it's by far the only thing to use. I stuck with copper for an extra 10 years and I shouldn't have but I wanted to be sure.

I recently helped bid and install a water system for a 23 home community that I'm an owner in. We have a water operator that keeps us in check with the state as far as water sampling goes. As I tried to learn more about the types of piping chemical wise, I was surprised to hear that nobody really didn't know. They can tell you if you have some bug in your water but not if you have some off-gassing pipe chemical.

That's been my latest quest to find out which of all the water pipes out there is ok for humans.

Sometimes I think it might be iron pipe.

Ductile iron water main has a concrete liner in it. I have installed miles of 8" main over the years. It is the standard where we are at. I used to see blue brute PVC but not as much as the ductile. That stuff is pretty darn inert.