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Mrs. Peel said:The best thing to do is get a reverse osmosis filter for your home. When you are out or at work and in an emergency, you could drink bottled water, usually they have machines that sell it in public places. I know you run the risk of the plastic leaching out of the bottle, so it's a crap shoot. I do believe Aquafina does not contain fluoride, I did some research one time and I believe they used reverse osmosis on it. At least at that time.
A reverse osmosis filter is indeed the best. There is no better and easier way to purify water that I know of at home. The pores of the membrane can be a small as 0.1 nm so this will filter out any microorgamism and many elements.
Fluoride ions have a relative radii of 0.119 nm so 0.238 nm diameter so it might be good to keep that in mind when choosing the proper membrane's pore size. 0.1 nm would be the best of course but it might be more expensive and I don't really know if it's available on portable/home systems.
Aquafina water, at least here in Canada is bottled tap water from Ontario that went through a reverse osmosis filtration and that has been ozonized. But as I am looking at one at the moment (on google image), I can that there seems to be traces of fluoride in it (0.3 ppm). So I would avoid it.
Very personally, I would avoid (if possible of course) any form of bottled water that comes from public distribution (like Aquafina, Dasani, Nestlé etc). Regular tap water is just atrocious to begin with (unless is it directly spring or well water like in very small remote villages). It contains so much crap like pharmaceuticals, hydrocarbons, heavy metals, volitile organic compounds and all sorts of other disgusting chemicals. That's because a regular water treatement plant will only remove turbidity (particles), color, taste (more or less) and microorganisms. So even if bottled water is further filtered by reverse osmosis, nothing indicates me that it is really purified.
Hope it helps.
Peace.