This Pure H2O 3 stage ultra filtration system is designed with a sleek and space saving design. The first stage 5 micron sediment filter reduces sand, silt, dirt, and rust. The second stage 5 micron carbon block filter reduces chlorine, taste and odours. Finally, the third stage reduces cysts such as cryptosporidium and giardia. Tiny suspended particles are unable to pass through the 0.1 micron UF membrane, allowing fresh clean water and dissolved minerals to pass through. Historically, this separation process has been used in large municipal water treatment plants and hospitals; however through advances in technology it is now available to you as a powerful under sink water filtration system in your home. This system has push-button, easy and sanitary filter replacements with pivot filter heads reducing space requirements and provides easy access.