In both instances you're pumping ionized water past an electric field.(Plastic => unshielded -- no Faraday cage effect -- factory may not provide a current bleeder strap)
I suppose that is why they want us to bond the water these days.
Galvanized pipes use Zinc (Zn) as a sacrificial metal to shield Iron.(Fe)
Who uses galvanized pipe these days? Copper is even hard to find around here. Everything is plastic.
We did have a "pinhole" problem across the river and they were suing everyone in sight but nobody really looked at a ground/bond issue and I always suspected that was the problem
