We use a solid carbon block filter that is considered to be the most effective method for reducing a wide range of contaminants of health concern, which may be present in the water.  The carbon is compacted into a dense structure, causing every molecule of water to be forced through microscopic pores of carbon, effectively reducing pollutants.  The Solid Carbon Block Filter is a replaceable cartridge designed so that it can be easily changed.  Some additional advantages of the Solid Carbon Block Filter are that it does not waste water, there is no electricity required, it does not remove essential trace minerals that are beneficial to good health, it does not add salt or silver to the water; and it provides fresh, delicious, healthy drinking water.