From the point of view of quality, the medicinal mineral waters of Dudince have an extraordinary position among the mineral waters of the Western Carpathians. The waters are of the Na-Ca-/Mg/-HC0₃-Cl-/S0₄/ type with M = 5−6 g.l^-1, temperature 28 °C, content of CO₂ up to 1.8 g.l^-1 and H2S up to 10 mg.l^-1. The waters are notable for the stability of their chemical composition, with the exception of gases. Apart from this, other mineral waters, belonging to neighbouring hydrothermal structures also occur at Dudince.