The water treatment system utilizes a process called reverse osmosis (RO). As the heart of the purification system, the RO process uses semi permeable spiral-wound membranes to separate and remove dissolved solids, organic, pyrogens, sub-micron colloidal particles and bacteria from water. Feed water is delivered under pressure at about 60 PSI through the permeator where water permeates the minute pores of the membrane and is delivered as purified water. Impurities in the water are concentrated in the reject stream and flushed to drain. Your newly purchased Reverse Osmosis System is capable of removing between 90% to 96% of the total dissolved solids (TDS), organic, and bacteria. Under The Counter Water Treatment System is a standalone unit though we recommend combing it with the Pursalex PN12 to provide our premium hydrogen activated structured water for maximum "intra" cellular hydration and detoxification.