Identification of groundwater contamination in needamangalam block, mannargudi taluk, thiruvarur district, tamil nadu using remote sensing and gis technology

Water is renewable resource occurs in three forms viz, Liquid, solid, vapor (gaseous), all these tree forms of water are extremely useful to man. No life can exist without water. Since, water is an essential for life as like that of air, it has been estimated that in the human body two-third portion is constituted by water. The water is not only essential for survival of human beings, but also for animals, plants and other living beings. The present study is attempted to identify the groundwater contamination zones using remote sensing and GIS techniques. Using sequential by preparing of thematic maps like EC, pH, Ca and TDS maps managing these GIS layers in Geo-database and assigning weightages based on the correlative factors that appear to be important in holding / processing of recharge of water and ground water contamination content. This study helped to delineate the part have been classified as high contamination zones.