An RO water purification system or Reverse Osmosis contains a semi-permeable membrane that removes Total Dissolved Solids (TDS) from water along with several other impurities like Bacteria, Virus, heavy metals, chemicals, and other impurities. As water passes through the semi-permeable membrane, it only allows pure and sweet water to pass through it, while flushing away the impurities.An RO water purifier promises safe and pure water for your family. Pureit RO water purifiers give 100% safe, mineral enriched drinking water without any virus, bacteria, chemicals, heavy petals, pesticides and other harmful impurities in it. Safeguards your family against waterborne illnesses Sweetens taste of water, enabling you to drink it more frequently Immunity Boosting copper infused in RO water boosts immunity fights obesity, improves digestion Improves overall health and well-being.