From the IRC.

- P2904.5 Water-distribution pipe.

- TABLE P2904.5

- - WATER DISTRIBUTION PIPE
- - - (PVC is not shown on the Table as an allowable material)

- P2904.4 Water service pipe.

Water service pipe shall conform to NSF 61 and shall conform to one of the standards listed in Table P2904.4.

- TABLE P2904.4
- - WATER SERVICE PIPE
- - - Polyvinyl chloride (PVC) plastic pipe

The code reference, then, is "PVC is not allowed for use as distribution piping according to P2904.4 and Table P2904.5, IRC."

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Jerry Peck, Construction / Litigation Consultant
Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )