Is hard water better for teeth than soft?

[blowout preventer]

Is there any difference with regard to healthy teeth between drinking
soft water and hard water?
After starting to drink water through the softener, I got used to it,
and now hard water doesn't taste as good, tastes chalky and tastes of
chlorine.


1. Does the softener remove fluoride?

2. Do the minerals in hard water afford any benefits to teeth?

3, Any downside to softened water from any other health perspective? I
have heard people say it contains sodium. I don't think that is likely,
for the simple reason that if it contained any appreciable amount of
salt -- it'd taste salty. (Someone else said it does indeed contain
sodium -- but not any more than what's in a slice of bread).

[Steven Bornfeld]

I have never heard a suggestion that hard water was beneficial to
teeth. There is apparently some weak evidence correlating hard water
with heart health.
If water is softened by ion exchange, it may well contain sodium and/or
potassium. I rather doubt that the amount is a health issue with normal
usage.
Some filters may remove fluoride, but that probably depends on the
particular filter.

Steve