Reverse Osmosis System is a membrane desalination process increasingly used worldwide purifies brackish water for drinking and other commercial applications. Reverse Osmosis (RO) removes Total Dissolved Solids (TDS) i.e. Calcium, Magnesium, Sodium, Bi-Carbonate, Chlorides and Sulphates from water by 90% to 98%. It also reduces harmful minerals like Arsenic, Fluoride, Leads, Bacteria & Viruses and restore the original taste and quality of water. In RO high pressure process water is passing through a semi-permiable membrane with pores of 0.0001 micron diameter area. Purified water is collected through a permit line an impurities in water is flushed to drain.