Piešt'any–thermal H2S water and mud

 Slovakia has very rich sources of mineral and thermal waters. One of the warmest is located in Piešt'any. Its discharge rate is 40 l/s; it is Ca-Mg-SO₄-HCO₃-Cl type with T.D.S. 1.4 g/l, H₂S 10 mg/l and temperature 68  °C. The waters seep on the spa island, which lies between the river Váh and its branch. The characteristics of the water and mud predestine the existence of this great spa in Slovakia. Its reputation is based on the treatment of rheumatic and neurological disesases. Received: 15 November 1996 · Accepted: 13 January 1998