ABSTRACT: Water resources in upper part of Torysa catchment have an important role in ensuring of population by drinkig water for Prešov and their surroudings. In this area exist 18 water resurces, to the most important belongs water resource Hlavný prameň (Main springs) in Vyšný Slavkov. The next 16 water resources are situated in alluvial deposits of Torysa river and their tributaries. In the article are evaluated quantitative and qualitative characteristics of groundwater in upper part of Torysa catchment in frame of solution of project „Hydrogeological drought and its influence on exploitable amounts of groundwater“. In the evaluation are used data of Slovak Hydrometeorological Institute, East Slovak Water Company and data of Department of hydrogeology, there are time series of withdrawals and time series of qualitative parameters of groundwater. These data can provide only Water Companies, therefore evaluation is oriented on water resources determined on public water supply, keepered by East Slovak Water Company.