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For our very survival pollution free water is the dire need of the day

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Author: 
Dr. Ratna Roy (Pathak)
Abstract: 

Water is one of the prime necessities of life. With increasing number of people depend on this resource; water has become a scarce commodity. Pollution makes even the limited available water unfit for use. Water is said to be polluted when there is any physical, biological or chemical change in water quality that adversely affects living organisms or makes water unsuitable for use. Sources of water pollution are mainly factories, power plants, coal mines and oil wells situated either close to water source or away from sources. They discharge pollutants directly or indirectly into the water sources like river, lakes, water streams etc. In all its forms, water shapes and nourishes life on Earth. Life on this planet first developed in water, and the world’s unique biodiversity and human communities both depend on clean water’s continued availability. However, less than one percent of the Earth’s fresh water flows freely, and burgeoning human populations are making unsustainable demands on this vital resource. Demand for fresh water is already outstripping supply in many regions around the world. Both biodiversity and human communities are at risk: an estimated one out of every six people on Earth has no access to clean drinking water; Thus, water is a precious resource. Over the years rising populations, growing industrialization, and expanding agriculture have pushed up the demand for water. Efforts have been made to collect water by building dams and reservoirs and digging wells; some countries have also tried to recycle and desalinate (remove salts) water.

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