What is the difference between faucet-mount or pitcher filters and the R.O. unit?
Faucet-mount filters, pitcher filters and refrigerator ice/water filters are able to reduce certain contaminants from your water by the use of granular activated carbon. In most cases they are used to reduce chlorine, lead, odor and taste. Carbon filters eliminate contaminants down to 0.5 microns in size, and R.O. filters down to 0.0001 micron. Therefore, there are tens of thousands of contaminants that are removed by R.O. and not by faucet-mount, pitcher or refrigerator filters.