I'm in Washington State, but I have never heard of the plumbing code being interpreted that way.
You must have at least 21 galvanized to brass connections in your home.
Just had an inspector not pass a water heater because the cold water inlet has a 3/4" threaded brass ball valve on a 3/4" galvanized pipe stub out of the wall. The house is plumbed in Galv. He stated that a dielectric union was required in between the galv. & the brass valve. 2010 California plumbing code does say "dielectric unions shall be used at all points of connection where there is a dissimilarity of metals". So I guess it's letter of the law but has anyone ever done this or heard of anyone requiring this? And I'd love to know a what he wants to do at every brass hose bib & brass angle stop!?
Thanks for the reply Terry. I too am a plumbing contractor & have installed a ton of water heaters but this is a first. I have contacted the building department to get more info from the senior inspector, waiting for his answer. California is not fun
2 hours after an email to the senior inspector requesting clarification the job site inspector called with a sudden change of heart on the matter. Other than an upset client, upset general contractor, loony inspector & a confused plumber (me) were back in business.