Do you think it's all in people's head? Bottled water as opposed to tap?
I do not think that it is in people's heads at all. I live in an area where the water quality is very poor. I wouldn't go around drinking household chemicals and I wouldn't drink the water that is coming out of my tap as it is laced with a similar amount of chemicals. It cannot do us any good at all.
If you think that it is bad for the environment to drink bottled water, invest in a GOOD QUALITY (and I emphasize GOOD QUALITY) water filter. Water is the most precious resource that we have. Water makes up a large percentage of our bodies. We need to ensure that we are partaking of the best quality water possible for our health. You cannot put a price on health. Without it, life is damn miserable.