Commercial Reverse Osmosis (RO) is a water purification technology that uses a semi permeable membrane to remove larger particles from drinking water. In reverse osmosis, salts are being removed from water through membrane by applying a very high pressure on it through High Pressure centrifugal pump. RO Plant has ability to remove many types of molecules and ions from water, including salts, minerals, bacteria, and other impurities of water. The result is that the solute is retained on the pressurized side of the membrane and the pure solvent is allowed to pass to the other side. Rest of the water drained out through drain line and only purified portable water passes through the membrane and collected in a purified water tank.