The house where I live has soft well water, with lime being the only bad
ingredient.
I have a house across the river, not ten miles from here, and the deep
well water
is loaded with iron and smells like a melting sulfur pit.
The softener does nothing for the smell and leaves some rust, so the
kids who
are living there use a whole house filter with replaceable cartridges.
It remove the stink would require one of those potassium permanganate
devices
that mixes the liquid in before the sofener.
Expensive and not worth it to me..................since I don't live
there.
R.O isn't really needed for here. The water tastes fine and has no
odor at all.