As for drinking water I do know there are differences in them. Some just taste so nasty. My tap water (not really bad for health just really bad tasting)tastes better than some of it.  

My fish seem to like it tho. except my Mom just down the street has trouble with her tetra's. They keep disappearing on her. She lost 3 this past weekend. My guess is the water is too hard. It may be too hard for her loaches (albino khuli's) as well. They tend to hang out at the top all the time.

My snails seem to be ok tho. I acquired a couple Mystery snails(my fish store has them). They are big and beautiful. I have one in each tank. Plus a spare tank to put them into alone if I decide to raise baby ones :) The one in the guppy tank seems to be doing a good number on the bad case of algae in there. And the one in the Beast is pretty mobile. I lost all my ghost shrimp when I treated for parasites a few weeks ago. So I got another handful and they're doing ok. I even have an egg carrying Momma ghost shrimp. Oh and the store will take guppies in trade as long as I bought my original one there. Which I did. Her two daughter's are dropping now as well. Guess I didn't remove her son from the tank soon enough. He's now swimming with the mollies, platties and gourami's in the Beast. Soon to be joined by possibly a few more non gravid spot fry.