Most bottled stuff is basically tap water that's been shipped really far. Its a horrid industry that I really can't get behind for any reason. I use what I can for the moment, which is a Brita filter, but when I'm living in my own space I'd like to invest in a better one. I'm also leery of RO since its basically a different way to create the same final product as distilled water, which everyone says is bad. If I had an RO or distillation system I'd have to make sure it was one that remineralized the water... but who knows if I'll ever be able to go full RO, haha. ROs apparently waste a lot of water, too, so I dunno. If I can afford it one day that's what I'll do, until then I just filter as much as I can.