PVC water pipes for Potable water

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Moderator Post: > My Polybutylene, Poly Butyl, Plastic, PB, Quest/Qwest pipe is leaking or brittle, Find Help Here! by Handyman on 10/26/2004

Hi Bob,

I have an interesting question. I purchased a house with PVP water pipes throughout. The person who plumbed the house said this was OK because the cleaner and adhesive were marked for potable water. The pipes are from Cresline, and are marked NSF - pw. I've been reading about the health concerns of Vinyl Cloride, but I'm not sure if this relates to PVP. So my question is, Are the pipes safe to supply drinking water?
Thank you.