Water is the most crucial necessity in the life of every individual especially the drinking water. The water used for consumption has to pure and fit for the drinking purpose as the contaminants and impurities dissolved in the tap water can lead to various health related hazards and water-borne diseases. So, there are basically two choices to consume the safe drinking water, one is the use of an RO system which uses the advanced techniques of purification of water and other which is very easily available are the bottled water of various brands in the market. It is our wish to use any one of them but there are some factors which we must ponder about before taking the decision to choose bottled water. · Cost of the bottled water If we camped the cost of the bottled water and the RO purified water, we will observe a huge difference as the RO just needs the installation charges and after that we can continue to get regular supply o...