The aim of this study was to determine the quality of the mineral water from Vitinički Kiseljak (Nos. 1 to 9, except No. 3) and Kozluk springs that are located near the town of Zvornik in the northwestern Republic of Srpska, BIH. The results were compared with those presented in previous reaserches in order to determine if the water quality has changed and if the water is still suitable for therapeutic purposes. The physicochemical (temperature, odor, pH value, total hardness, electro-conductivity, evaporated residue, suspended materials, chemical consumption of oxygen and KMnO4) and chemical (Fe2+, Mg2+, Mn2+,Zn2+, K+, Ca2+, Cu2+, Al3+, HCO3-, Cl-, CO32-, SiO2, SO42- and S2-) characteristics were analyzed. The obtained results showed that the waters could be classified as hydrocarbonate-sodium-chloride with the mineralization of 2450-5830 mg/dm3. It can also be concluded that the waters are rich in calcium, magnesium and iron, as well as that those are acidic waters due to the presence of free carbon dioxide. In the samples from Kozluk and Kiseljak No. 2 springs oxygen-sulphide is present as well. The ideal ratio of the minerals in these waters is suitable for therapeutical purposes.