High Purity Drinking Water by Reverse Osmosis Reverse Osmosis is the process by which ordinary tap water is forced through a semi-permeable membrane, leaving certain unwanted substances behind. These substances are rinsed away, producing clear, fresh tasting water.It is a process similar to that used to produce bottled water and is the most effective technology known for the improvement of drinking water today   REMOVES 86-90% of All Organics Including: THM's, PCB's, Pesticides, Herbicides, and Benzene.The rejection table is an average and should only be used as a guideline as TDs, water temperature, and water chemistry can vary and effect performance.   5-YEAR WARRANTY This system features a 5-year warranty. Warranty does not include filter relplacement, membrane or labor charges.   WQA VALIDATED This unit has been tested and validated under teh Water Quality Association S300-84 Standards and bears teh gold seal of validation Conditioned Water