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The addition of any substance to water or changing of water’s physical and chemical properties in any way which interferes with it’s use for legitimate purpose is called water pollution. Most of the rivers of India are highly polluted due to domestic and industrial effluents. Water pollution adversely effects not only human being but also plants and animals. Chambal river of Kota region is also highly polluted by the domestic effluents of different untreated nallah’s. Among these 4 are causing major changes in water quality. Quantitative estimation of different parameters reveals that Alkalinity, Salinity, Total Hardness, Turbidity, amount of chlorides, Total dissolved solids, Coliforms and BOD is very high in all the studied sites. Dadabari nallah is highly polluted among all the sites. Treatment of these water bodies is highly essential for the life of Chambal river.

Key words: Domestic effluents, Physico- chemical, Biological parameters, Pollution, Treatment.