Whats the difference between naturally soft water and the water from a water softener?
There’s a great deal of difference! Naturally soft water is generally acidic and contains very few dissolved minerals. This tends to make the water quite corrosive to pipes and plumbing. The water from a water softener is more like the raw water from which it is made. It is usually alkaline rather than acidic, and contains moderate amounts of dissolved minerals. Thus softening hard water in the home should not significantly affect corrosion.