
I read this thread with interest. I think we are talking about two separate issues here. Hardness, which I think is the amount of Calcium and Magnesium in the water?..and PH which is a scale of alkaline to acid.
In Vegas where I live for over 30 yrs the water was hard and alkaline(about 250 ppm)...and alkaline(about 7.5)it tasted great, laundry came out beautiful and I could raise some super species of plants and fish in it which I cannot duplicate here in the northwest. It was very low in other contaminants and that was a big factor in making it nice water. I still long for that water!
On the other hand it took more cleaning products to get things clean but bleach helped with that, both dry and liquid.
Here in the Northwest the water is softer, and on the acidic side so it takes much less detergents to get laundry(and me..LOL) clean. This water also has other contaminants in it, the aforementioned iron and sulfa being the two I really detest. You cannot use liquid bleach in these conditions but the powdered does OK.... Oxyclean is better. It's still more difficult to get cloths clean here.
The water does indeed leave those iron deposits in your sinks and tubs from the iron bacteria but that can be dealt with easily. It's quite drinkable but not nearly as delicious as the water I left behind.
I could get filters and all that stuff but I don't feel I need them. I can raise different plants and gave up raising fish.
So, I don't think that hardness is so much the issue(unless it is off the charts and ridiculous of course like some have problems with...

), it seems to be more to do with most of us as to what other contaminants are in the water as to how useable, drinkable etc your water is. and whether you need to filter it etc.
LQ