AWWA C Field Welding of Steel Water Pipe (PDF) List Price: $ Member Price: $ ix STANDARD SPECIFICATION. These AWWA Standards address all facets of water treatment and delivery. (mm Through 1, mm), of latest revision. (mm) and Larger The purpose of this standard is to provide the minimum requirements for steel water pipe,in. Whether compliance with NSF/ANSI, Drinking Water System Components—Health Efects, is required. (mm Through 1, mm), of latest This document has been developed by the PVCPA to