cPVC is best for potable water...apparently. Most municipalities us PVC to deliver drinking water in new installations and plumbers use flexible HDPE (pex) for plumbing homes. A bit of a paradox if PVC is unsafe. We tore out all the galvanized pipe in my house and replumbed with pex.
I can say that microbes seem unaffected by PVC.
I can say that microbes seem unaffected by PVC.