Abstract

Water is essential natural resource for sustaining life and environment, chemical composition of surface or subsurface, geothermal or non - thermal, is one of the prime factors on which the suitability of the water for domestic, industrial or agriculture purpose depends. In the present study several points of ground water sources such as open wells, bore wells and hand pumps have been selected to check the portability of water. The groundwater contour analysis is done by using Arc GIS software. Geographic Information System (GIS) approach to develop spatial information and knowledge based on the ground water quality of Thar desert area (Bikaner, Kota, Jaisalmeir, Jodhpur, Barmer, Udaipur, Nagore) has been found to be very useful. GIS database also helps in decision-making process by identifying the most sensitive zones that need immediate attention. This study reveals that the ground water is the only source for people in the study area, and the results of the chemical analysis with special emphasis on Fluoride contaminaton of ground water shows considerable variation. High concentrations of fluoride pose a risk of dental fluorosis as well as skeletal fluorosis and osteoporosis.