Reverse Osmosis based Package Drinking System efficiently removes up to 95% of total dissolved solids and has built in safety features to protect high pressure pump and membranes. The Package Drinking System is less to fouling and has good spiral wound thin film composite membranes which is resistance to fouling and at the same time offers good energy savings. The Package Drinking System has parts which has good reliability, durability and resistance to corrosion. The Reverse Osmosis based Package Drinking System can be availed with auto flush system, PLC controller, pre-treatment filter, feed pump and dosing system.