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Coal mining is the major mining activity performed in India. Most of the coal production in India comes from opencast mines. Due to increased human population, industrialization and man-made activity water is highly polluted with different harmful contaminants. Natural water contaminates due to weathering of rocks and mining operation. The availability of good quality water is an indispens-able feature for preventing diseases and improving quality of life. This Parr resents a study of physko-chemical characteristics of water in opencast coal mlne,ChirimirLDIstrictKoriya, Chhattisgash. Monthly Changes in Physical and Chemical Parameters such as Water Colour, pH, Turbidity, Total Dissolved Solids, Boron, Chloride, Calcium, Total Hardness, Total Alkalinity, Fluoride, lion, Manga-nese and Nitrate. Were analyzed for a periods of one year from January - December (2013-14). All the water samples were analyzed and found that the quality of the water is good only some of the param-eters like turbidity, calcium, fluoride and total hardness are slightly greater than the permissible value. Therefore there is ample scope to utilize this mine water.