The Database of Groundwater Classified as Mineral Resources contains information regarding wells and springs where waters classified as medicinal, thermal, and brine waters are extracted. The data collected in the database includes the location of intakes, measured and calculated hydrogeological data, basic drilling and lithostratigraphic information, results of physicochemical analyses of water samples and dissolved gases, information on the scope of stationary studies and observations conducted at the intakes, as well as data on exploitable and available water resources, mining areas, protection zones, and documents issued by geological administration units authorizing the exploitation of these waters. In addition to data on currently classified mineral water intakes, the database also includes information on operational and research wells as well as springs where waters have been extracted or examined, which, due to their chemical composition or physical properties, may be classified as mineral resources in the future. The structure of the database is consistent with the structure of the Central Hydrogeological Data Bank (HYDRO Bank), which collects data on ordinary waters.