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Groundwater is an important component of our nation's fresh water resources. It plays a key role in meeting the water needs of various user-sectors in the nation. The natural resource cannot be optimally used and sustained unless the quality of water is assessed. In the present study, the impact of mining activities on groundwater quality around the Korba coalfields covering an area of 530 sq.km which lies between latitudes 22°15′ and 22°30′N and longitudes 82°15′E and 82°15′E in the state of Chhattisgarh, India was carried out. For the study, data collection includes maps, toposheets, water quality data, well locations, mining lease areas, village locations etc. The above said data has been collected from various government departments of Chhattisgarh. After the data collection, base map has been prepared using ArcMap 9.3. The water quality database is analyzed and then used as attribute database for the preparation of thematic maps showing distribution of various water quality parameters. Water Quality Index has been calculated for various parameters such as pH, Turbidity, Total hardness(TH), Chloride, Total dissolved solids(TDS), Calcium, Nitrate, Iron, and Fluoride. Water Quality Index map is also developed. The results obtained are presented in the form of maps, used for better understanding of present water quality scenario of the study area. Analysis reveals that the groundwater of the region needs field specific treatment before put to use.