摘要:A two-year study of the seasonal variations in fluoride concentration was carried out from November 2006 toOctober 2008 in the groundwaters of Mysore city with five zones. The fluoride concentration in the watersamples of east and west zones showed significant seasonal changes during both the years. However innorth, south and central zones, fluoride concentration did not establish any variations in both the years. Thehighest fluoride value of 0.46 mg/L was recorded in the west zone and the lowest of 0.22 mg/L in the eastzone. The probable causes for such variations in fluoride concentration in these groundwater samples havebeen discussed.