The high fluoride values in waters consumed as drinking water are undesirable. In this study, fluoride contents of samples taken from some neighborhoods of Isparta city have been analysed using two different analytical methods (ion-selective electrodes and ion chromatography). Based on the obtained data, fluoride map was prepared and distribution of fluoride content in the tap waters of Isparta city have been determined and the waters were divided into 4 regions according to fluoride values. It is observed that fluoride contents analysed by "ion chromatography (IC)" and "ion selective electrode (ISE)" method are compatible with each other. However, in general, fluoride values measured by IC method are lower than those measured by the ISE method. By the blending processes, fluorine contents of the waters, higher than the limit value (> 1.5 mg /L), was brought to a standard value, but in some regions they are reduced below the standard values (<0.5 mg /L). Fluoride contents of the waters obtained below the standard value may give rise to problems in terms of dental development and health. Therefore, blending operations for the drinking waters used in Isparta city should be carried out very carefully.