The aim of this thesis is to determine the origin of elevated arsenic concentrations of selected spring waters in the Zemmbach- and Tuxbachtal in Zillertal. This question emerged from a preservation of evidence conducted by the Pöyry Infra GmbH, in which elevated arsenic concentrations were found for some springs in this area. The focus of this thesis was on the hydrogeological and hydrogeochemical behavior of the springs. In the course of this work, 18 springs were recorded, sampled and characterized. Based on field and laboratory investigations an attempt was made to classify the individual spring waters into groups and to draw conclusions about potential contamination of spring waters with arsenic. The most important parameters in this case were the discharge, the electric conductivity and the temperature, as well as the main cations and anions determined by chemical analysis using mass spectrometer. The predominant water composition showed that the springs can be divided into three different spring types. It is evident that springs with elevated arsenic content can be assigned to one particular group. This type includes relatively highly mineralized spring waters, from glacially overprinted unconsolidated deposits within the area composed of crystalline rock. Furthermore, it was found that there is a relationship between the sulfate and arsenic concentration of the waters. In summary, the arsenic content of the investigated springs is of geogenic origin and most likely due to the dissolution of sulphidic ores in areas of unconsolidated deposits. Furthermore the enrichment potential of arsenic is focused on altitudes relatively low for this region (<1200 m above sea level).