Reverse Osmosis/ Reverse Osmosis System removes all TDS content in water to very safe levels besides bacteria and virus, resulting in good quality drinking water. The System is an effective method of water purification by which raw water is transformed from impure to safe, hygienic and pure drinking water. The System is easy to operate and does not require daily regeneration with highly corrosive chemicals like hydrochloric acid and caustic soda. The System removes all harmful contaminants without the use of any chemicals and water is physically forced through semi permiable membrane of pore size 0.0001 micron and impurities are flushed out to drain. The Reverse Osmosis/ Reverse Osmosis System has contaminant rejection rates range from 85% to greater than 95% and a litre of highly treated water can usually be produced from two to four litres of water depending on the initial quality of water.