8 hIGh-DEnSITy PolyEThylEnE WATER ShoRT FoRM SPECIFICATIon hIGh-DEnSITy PolyEThylEnE WATER AnD SEWER PIPE SCoPe This specification designates general requirements for ½” through 63" igh-Density Polyethylene (h hDPE) PE 3408/3608/4710 for the Municipal and Industrial Water and Sewer Distribution Syste. MATerIALS