There are many similarities to the construction of water filters, however. The working part of the filter, the filter element, often is the difference between filtered and purified water. This is the mechanism or material within a filter that removes microorganisms from your water. The pores in the filter element, measured in microns, will allow minuscule water molecules to pass through, but not larger sized contaminants. Each filter is typically fitted with a pre-filter, which is a screen that catches grains of sand and dirt before they can invade the filter and clog the pores of the delicate filter element.
Some filters add a purifier.
The purifier is a filter that removes or neutralizes viruses in addition to protozoa s and bacteria, usually with the addition of a carbon or iodine matrix. Utah Vermont Virginia Washington Washington, D.C. West Virginia Wisconsin Wyoming Alberta, Can. British Columbia, Can. New Brunswick, Can. Northwest Territories, Can.