Russia has almost all hydrochemical types of underground mineral waters; however, unlike the well-known and popular resorts in the world, they are used very limitedly. In addition to their high medicinal value, mineral waters, when properly marketed, is a natural product that is comparable, and, in many cases, superior in price to that of similar volumes of high-octane gasoline. In addition to the characteristics of the chemical and gas composition, some underground mineral waters in their native state have an elevated temperature and are thermal and hyperthermal. Low-mineralized nitrogen thermae are one of the large groups of mineral waters; they are common in the areas of young tectonic faults in the earth’s crust, which frame the mountainous areas. The deposits of thermae within the blocky and folded-blocky structures are fractured water-pressure systems; the thermal waters in the sedimentary and volcanic-sedimentary rocks saturate the reservoir or fissure-interstitial aquifers and are typical artesian basins. The successful development of health resort business in Russia should be, first of all, based on the extensive use of natural therapeutic factors. As clearly confirmed by the experience with spa treatment in both Russia and world practice, accumulated data from researches, thermal mineral waters determine the possibility of creating large spa centers that provide high economic efficiency.