This system reduces lead, tastes, odors and chlorine by 99% and filters out 99.99% of micro-organisms. 2-stage filtration. A 5-micron sediment filter removes particles 15 times smaller than a grain of sand. In addition, this system reduces lead, tastes, odors and chlorine by 99% and filters out 99.99% of micro-organisms, such as cryptosporidium and giardia cysts.