SPATIAL DISTRIBUTION OF GROUNDWATER QUALITY IN SELAIYUR VILLAGE, CHENNAI, INDIAD. Shamini Valentina, K. Ilayaraja and A. Ambica
Spatial distribution of groundwater quality in the Selaiyur village is presented. A total of 25 samples were collected during the month of October 2013 and analysed for various physico-chemical parameters such as pH, Alkalinity, Hardness, Chloride, Total Dissolved Solids, Fluoride, Ammonia, Nitrate, Phosphate and Residual Chlorine. The analysed parameters were compared with WHO and BIS standards. The spatial distribution for all the analysed parameters was mapped based on the Inverse Distance Weighed method (IDW) using the open-source software, Quantum GIS. The spatial distribution of the groundwater quality in the study area was calculated by using Water Quality Index (WQI). The classification of groundwater based on hardness indicates that 80% of samples in the study areas are very hard. Therefore, the groundwater in the study area is not suitable for drinking purpose.
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