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The occurrence of fluoride at elevated concentrations in different environmental compartments in almost all parts of the world poses a real threat to life on the earth. The hazardous effect of fluoride includes damage of human biological systems, even at molecular level and leads to serious health disorder, the fluorosis. The resulting manifestations of fluorosis are the mottling of teeth, softening of bones, ossification of tendons and ligaments and also neurological damage in severe condition. The present work highlights the occurrence and distribution of fluoride in ground water in...