Water is precious and limited and no one can deny that. Almost 2/3 of Our planet earth is covered by water but despite that, there are millions of people who do not get clean and potable water for theirs. The vast quantity of water is in the ocean and we cannot use that salty water without any treatment. We require normal water with a PH level of 6.5 to 8.5, and that is in limited quantity. We waste a large amount of water in our domestic and industrial use and release polluted water without treatment through the effluent treatment plant.
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