It's funny ... i've seen quite a few of the galvanized tank setups in the older places i've worked on over the years but never had call to actually work on one. They were all phased out in favor of the bladder tanks by the time i came on the scene about 35 years ago. Almost all of the jet pumps have been phased out in favor of submersibles now as well.

I think it has to do with the water table here. A single pipe jet is only good to 30 feet before it starts to cavitate. A two pipe jet with a foot valve is pretty much limited to 100 feet. It's not uncommon for our drilled wells to be 200 - 500 feet deep so a submersible is needed for that job.

The submersibles seem to pair well with the bladder tanks. They usually give you at least twenty years of trouble free service as long as the installation was done right. In a way ... those submersibles are almost too reliable. The impeller stacks slowly wear over the years and there's an imperceptible loss in pump efficiency. That results in longer run cycles from "cut in" to "cut out". You end up using more electricity.



It would almost be better of they had to swap out the pumps with new one a little more often.

Maine is cold, but your part of the world must be much colder in the winter. I wonder if your bladder tanks freeze more often than ours do.