Abstract: Water samples from some springs which are used for drinking and irrigation purposes were collected inTendürek volcano region, located in the Eastern Turkey. Most of the spring water samples contain very high amountsof fluorine ranging from 2,5 to 12,5 ppm. The incisors and molars of a two-year-old sheep, obtained from the fluoroticconditions, exhibited brown to black staining and excessive and irregular wear. During the surveying of the area, dentalfluorosis was observed in the local population by the medical team. Dilution of fluorine rich waters with other suitablewaters down to a safe level was recommended to alleviate effects of fluorine on livestock and human health and alsoon the contamination of soils and pastures.The following units have been identified around the Tendürek mountain which is one of the young volcanoes ofAnatolia: Metamorphic rocks which are composed of micaschists, marble and quartzites and are thought to be Paleozoicin age, crystalline limestones which are Permo-Carboniferous in age, Upper Cretaceous ophiolites containing spilites,serpentinites and limestones, Paleocene limestones, Eocene flysch and limestone, sandstone, claystone, siltstone andlimestones of Miocene age, and Tertiary lava flows. The whole succession is covered by young basaltic lava flowsof Tendürek volcano.Spring waters are coming from these lavas, limestones in flysch and ophiolite, and marbles in basement. Tensamples were analysed from these springs. High F- waters are NaHCO3 type, and low F- waters are Ca-MgHCO3type. F- , which might be transported by fumaroles - escaped from devitrified lavas, could be held on the surfaceof some minerals and then exchanged with OH- of underground waters with high pH. At the end of this hypotheticprocess these waters might be discharged as high F- water at the foothills of Tendürek volcano.