Not sure. I have hard water where I'm at and I stay away because it smells like pool water whenever I take a bath. It's pretty harsh on the skin as well. I'm guessing that it wouldn't be so nice on the insides. I've always stayed away from our water since we are in an area that burns and mines a lot of coal, theres bound to be heavy metals in it somewhere. 

sometime's people get kidney stones. I hear that keeping bodily fluids moving can prevent these..

There's hard water here, but I don't drink it.

soft water is also bad and most bottled waters are soft

We've always had hard water. I drank it growing up and still do drink it. Yum yumm minerals.
 I taste the difference immediately when I take a sip of city water or bottled water (normally, these two are the same things)...becase those taste...empty and flat. Or chlorinated/chemicle-y on a bad day. Yeck.

Obviously, hard water's health benefits or lack thereof depends on WHAT exactly you have in your water. If you know the levels of minerals in it, and know what can be harmful (and in what amounts)...THEN you'll know whether it's detremental or not.

Ours never has been, so *shrugs*

@salenee_x3@xanga - 
It largely depends if you have your own well system versus getting water from a city.
...also depends what SORT of well, nowadays.

My water is very very very very hard!!!
We purify it and find like rocks...and iron filings(yuckkkkkkky)
I'd have to say even though it tastes reeeeeeeeeeeely bad
Its not detremental to your heath
Our land lord, and her parents grew up drinking this same water, it hasn't hurt them.

I seriously did not know there are such things as hard or soft water. We get our water from Hetch Hetchy (s.p?)  Water Reservoir.

@LadyLibellule@xanga - that's what I was about to say.

I am not sure how hard water is detrimental to anyone's health.

I drink it, but I really don't have much to worry about. Here at my house, we're on a private well.  I refuse to drink tap water at school, though. That stuff fizzes and comes out green.