Articles
Mahindra current affairs magazine
Mahindra current affairs magazine published this article page no 28 water quality refers to purity of water or water without unwanted foreign substances. water gets polluted by foreign matters such as microorganisms chemicals industrial and other wastes. such matters deteriorate the quality of water and render it unfit for human use. when toxic substances enter lakes streams rivers ocean and other water bodies they get dissolved or lie suspended in water. this results in pollution of water whereby quality of water deteriorates affecting aquatic systems. sometimes these pollutants also seep down and pollute groundwater. the ganga and the yamuna are the two highly polluted rivers in the country current affairs magazine in india buy.