Fluoride Zonation in Dharmapuri District of Tamil Nadu (India)

Globally, 200 million people rely on water resources which are contaminated with fluoride. The high concentration of fluoride naturally found in groundwater, causes serious health problem to the local population. In Dharmapuri District of Tamil Nadu, a high concentration of fluoride has been found in groundwater. The main objective of the present study is to explore and identify the fluoride zones of this district. Samples are collected for 55 places and fluoride zone maps are prepared for the study region. As a result, the variation of fluoride was observed between pre and post monsoon period. In contrast, the number of fluoride zones decreased in pre monsoon period than the post monsoon period. However, the fluoride concentrations are constant in this district. As a result, the people of this area are facing many health issues.