Daruvar is known for hot springs and mineral water by thermal springs and the sites of mineral treasures such as mud and "Fang". Thermal water is always used for the treatment and rehabilitation as well as for baths and drinking water for its healing properties. Thermal water is, by its composition and balneological classification, akratoterma (indifferent waters with mineralization 1g/litri below). Chemical analysis showed that the predominant cations calcium and magnesium, and anions is dominated by hydrocarbons. In terms of radioactivity, it is very low and falling from heat sources. Chemical composition, all sources in the city, is almost identical, but different temperatures, varying from 39.2 to 47.5 ° C.