AWWA C904:2006
AWWA C904:2006 Cross-Linked Polyethylene (Pex) Pressure Pipe, 1/2 In. (12 Mm) Through 3 In. (76 Mm), For Water Service Specifies Cross-linked Polyethylene (PEX) pressure pipe made from material having a standard PEX material designation code of PEX 1006 in ASTM F876 for use as underground water service lines in sizes