I just watched Food Inc. recently, and while I'm sure they were anything but neutral observers, it did get me thinking about where I get my food from. My brother is hoping to work on a 100% organic farm (i.e. no chemical fertilizers, grazing farm animals, etc) and I'm very seriously considering just taking up a bunch of money and buying entire slaughtered animals. The way we raise and slaughter animals in this country is somewhat of a concern to me, since we're not raising healthy animals to slaughter and eat.
As for minerals, lets be honest, all of the info about levels in drinking water and in the streams, lakes and rivers is all bent for a political purpose. Some people want you to believe that it's tremendously dangerous, and the fear-mongering media wants you tuning in to their "special report" at 5 (really 5:30, so you watch 3 rounds of commercials first.) Other people don't really worry at all about the environmental impact of their actions, and they want you to believe that no matter what we do, we can't affect mother nature. The truth is most certainly somewhere in the middle, where our impact isn't nearly as pronounced as some claim, but is more important than others want to admit or realize.
All that to say, I drink water from the tap, my mom's very dynamic softy/LPS reef drinks from their tap, and all our animals drink from the tap, and none of us are worse for wear because of it. I also drink bottled water, mainly because it's more convenient, and while it is processed through R/O filters, they re-add sodium bicarbonate and calcium chloride for taste.