From the Manufacturer
Uses a carbon microfilter to combine activated carbon to reduce chlorine, sediment, bad taste, and odor with an ion exchange resin that reduces lead and copper. It also reduces pesticides (lindane, atrazine, and 2,4-D) and chemicals that are linked to increased cancer risk (benzene, TTHMs, and toxaphene). The filter leaves beneficial fluoride in the water. All filters come with a built-in Automatic Safety Monitor gauge so that you'll know (and even in advance) when it's time to change the filter.