Origin and chemical composition of thermal and thermomineral waters in Slovenia

In this paper a short overview of basic geothermal definitions and principles of geothermy is presented as well as a short overview of sources and chemical composition of thermal and thermomineral water in Slovenia. There are 51 geothermal locations in Slovenia with temperature of water (Tw) more than 20°C, whereas 18 of these are considered to be locations with thermomineral waters. The thermal and thermomineral waters in Slovenia are used predominantly in balneology (spas), although thermal water is used for greenhouses and space heating at several locations.