# How to purify water with activated carbon?

If I am not mistaken, distilling water does not remove all possible impurities. Chemicals with boiling points less than $100\ \mathrm{^\circ C}$ will be transferred as well. Does the usual tap water contain such (I think there is at least fluoride.)? I read that activated carbon can be used to purify water as well. How is it done in practice? Suppose I first use activated carbon and then distill the water (or in the reverse order). How much impurities there would be still left?

• Welcome to chemistry.SE! If you had any questions about the policies of our community, you can ‎visit the help center or take a ‎‎tour of the website.‎ – M.A.R. ಠ_ಠ Feb 1 '15 at 20:25
• Don't confuse the fluoride anion, $\ce{F-}$ with fluorine $\ce{F2}$, which is a gas under standard conditions. – Klaus-Dieter Warzecha Feb 1 '15 at 20:38
• Correct. Fluoride ion is what that's in tap water and is helpful for maintaining teeth health. Plus, it's REALLY hard (in an uppercase sense) to make something 100 percent pure. – M.A.R. ಠ_ಠ Feb 1 '15 at 20:47