J.C.Oliveira (11.20.13, 1:49 PM): Michael,
Has you ever heard about LifeStraw? It is a straw-like device that allows one to purify water as he/she pulls it through the straw. It was developed to aid areas with water shortage. After that it found a niche in adventure sport shops as well, but their main target is still water shortage areas. Have a look at http://www.lifestraw.com (that leads to teh website I listed in the "Website" part of this post. I believe that distributing that device with those in need (other than yourselves) would be super!