grounding to water pipe, copper to steel
I noticed that exiting my house (1965) is copper water pipe (the whole house is copper pipe). There is a copper ground wire connected to the copper pipe at that point (also coming from the house, bonding?). Then, the copper pipe goes into galvanized steel pipe (via a union) to the city meter.
I don't see a dialectric there between the copper and steel.
1. Shouldn't there be a dialectric between copper/steel to protect the pipes from corrosion?
2. If there is a dialectric (if I add one), should I connect a copper wire between the copper and steel pipe for grounding purposes?
This all got started because the incoming water pressure is 80+ lbs and I want to add a pressure regulator.
Thanks for any help that you can offer.