The water supply for the bath is provided by the Saint Stephen Well Nr.II commissioned in 1938. It is a hot-spring water with calcium, magnesium, hydro-carbonate, also containing sodium and sulphate, with a significant content in fluoride and metaboric acid.
The water of the drinking well is a healing water with calcium, magnesium, hydro-carbonate, chloride, sulphate, also containing alcalics and a substantial amount of fluoride.
Therapeutic suggestions:
Drink diets:
| Lithium | Li+ | 0,20 mg |
| Sodium | Na+ | 176,20 mg |
| Potassium | K+ | 21,40 mg |
| Calcium | Ca2+ | 156,30 mg |
| Magnesium | Mg2+ | 35,00 mg |
| Fluoride | F- | 2,75 mg |
| Chloride | Cl- | 197,00 mg |
| Bromide | Br- | 0,20 mg |
| Iodide | I- | 0,07 mg |
| Bicarbonate | HCO3- | 554,60 mg |
| Sulphate | SO42- | 211,20 mg |
| Sulphide | S2- | 1,21 mg |
| Metaboric acid | HBO2 | 6,50 mg |
| Silicic | H2SiO3 | 36,40 mg |
| Carbon dioxide | CO2 | 375,50 mg |
| Total: | 1774,53 mg/liter | |