Water Filtration, Drinking Water Filters A water filter removes impurities from water by means of a fine physical barrier, chemical process and biological process. Filters are used to cleanse water for drinking water, aquariums, shower. http://www.purliquid.com ID: 19333 | Rank: 6828 | Votes: -1.00 | Views: 975 | Submitted: 2008-08-12 |