To properly bond this PVC / ABS water line, use:
[*]3/8" Nylon Rope-minimum sized conductor,
[*]Non-Metallic clamps (zip-ties preferred),
[*]At least Two (2) supplimental ground rods, made of either 10'Ă—5/8" diameter Acrylic / High Density Polyethylene, or 10'Ă—1" sticks of Schedule 80 PVC.
Bond all this to a load bearing wooden framing member (aka header or beam).
Pass a copy of this message on to the person responsible for writing up the non-compliancy report, so there is no mis understanding of how to bond non-metallic water pipes!
I know this is a serious event, and my humor angle may be termed a bit off color, but maybe it would make an impact to that individual as to think "outside the code book" a bit more???
BTW, was any code article referenced? Like to have seen that one!!!