Water is the most essential compound to live. “CLEAN DRINKABLE WATER FOR ALL” is been the key worldwide concern for the twenty first century. Water covers 71% of Earth’s surface but in that only one percent is drinkable, how this one percent can be the basic requirement of the whole population, here where the real fight for water arises. “Purity in Every Drop” is the motto behind water treatment plant. Water treatment is the process that of treating the waste water to various purposes through different sorts of filtration and membranes. It involves treating water physically, chemically, biologically and technically through methods like “Reverse Osmosis”. Reverse osmosis is a common process to purify or desalinate contaminated water by forcing water through a membrane. “Redefine the purity of water with RO”