Ok, so after doing a residential service change we failed for the following reasons. 1. #6 bare Cu GEC to the water pipe needs to be #4 Cu. 2. No groundng bushing on the 2" nipple between the Meter enclosure and the new WP Panel. (Note. The new panel is a solid opening/non-concentric and has two locknuts holding it in place and that panel is bonded). I am under the impression that a #6 Cu is sufficient according to 250.66(A) and that there is no need for the grounding bushing on the nipple due to the fact that a solid grounded conductor runs from the meter to the bonded electrical panel. When I asked about the water pipe it was ROUGHLY explained that the "water system" must be bonded and that it has nothing to do with the GEC. FYI, the "water system" is CPVC other than a very short piece of copper on the outside. The explanation I received from the inspector was very unclear and that's why I am asking for more clarification here. We are working in a new area and these inspectors are not familiar with our work and vice versa so I am trying to learn what they are expecting.