[bobbylarrybobby]

Don’t know about your bones but all tap water has some minerals in it.

[stephen_g]

Good thing too, because if you drink demineralised water it pulls electrolytes out of your cells (I think by osmosis) and eventually you also end up with decreasing bone density.

[samus]

Most tap water is far from being demineralised. It's a problem if you have a reverse osmosis filtration system though.