The study examines selected physical and chemical indicators of water at four sites in the Tatra National Park and one in Zakopane. The pH, electrolytic conductivity and chloride, sulphate, nitrate and cadmium contents were measured for the water samples. The LF300 photometer was used, which is a universal device designed for water and wastewater analysis. The results were compared with the requirements to be met by water intended for human consumption. On the basis of the analyses, the examined samples of water were assessed in terms of their potential use as potable water supplies for the human population. It was found that water collected from selected intake points meets the standards for the tested physical and chemical indicators, which determine the drinkability of water. It was found that the main problem of the Tatra National Park is mass, uncontrolled tourism and tourists who do not comply with the regulations.