I assisted with a few residential electrical-service upgrades last year (in California). ...If the plumbing pipe could be used as one of two paths to ground (i.

I assisted with a few residential electrical-service upgrades last year (in California). ...If the plumbing pipe could be used as one of two paths to ground (i.e. conductive all the way), it was. Otherwise two grounding stakes were installed instead of one. > by code, plumbing repairs couldn't leave behind unbonded sections of conductive plumbing I assume that's correct, but I think shady / lazy / amateur contractors can assume the inspector won't check work in the crawl space.