THE REVERSE OSMOSIS SYSTEM WORKS ON THE PRINCIPLE OF THE NATURAL PHENOMENON OF OSMOSIS PROCESS.SINCE OSMOSIS PROCESS IS REVERSED BY EXTERNAL PRESSURE AND THE PROCESS IS TERMED AS REVERSE OSMOSIS. FEED FLOW OF THE WATER IS DIVIDED INTO PRODUCT STREAM & BRINE STREAM, WHICH CARRIES TREATED AND CONCENTRATED REJECT WATER. THE REVERSE OSMOSIS PLANT IS DESIGN TO PRODUCE 250 LITER/HR PRODUCT WATER WITH AN AVERAGE RECOVERY OF 50 %. IT MEANS THAT, FEED TO THE R.O. SYSTEM SHALL BE APPROX 500 LITER/HR. THE PROPOSED SYSTEM IS DESIGNED FOR 8 HRS CONTINUOUS OPERATIONS.