The strongest sulphur-rich brine in the world, which we use for treatment in the Physiotherapy Center, comes from the “Malina” borehole in Solc Zdrój. According to the classification, it is strongly mineralized chlorate-sodium sulphur water (brine), with bromide, iodide and boron, with the highest content of active sulphur
The strength of balneological treatments depends on the concentration of active sulphur compounds in the water. Using healing water sources with high concentrations (over 100 mg/1L) of sulphur compounds ensures the best therapeutic effects during the spa treatment.
Overview of selected
sulphur waters in Poland
| Source location | % mineralization | sulphur compounds in water |
| Swoszowice | 2.64% | 70.04 mg H2S/1L |
| Krzeszowice | 0.28% | 6.00 mg H2S/1L |
| Horyniec | 0.75% | 23.00 mg H2S/1L |
| Busko-Zdrój | 1.40% | 50.00 mg H2S/1L |
| Solec-Zdrój “Malina” | 3.10% | 830 mg H2S/1L |