Because of their content, thermal waters near the village Koson belong to the high thermal chloride natrium waters of medium mineralisation. The water is similar to world-known spa resort Hajdúszoboszló in Hungary. The colour of pool water in Koson is yellow-brown. It flows from the well 16T with temperature 60-80°C, but it cools down up to 38-40°C till it gets to the surface. The waters help to treat for disorders of locomotor apparatus, the consequences of traumas of bones and muscles, cardiovascular and nervous system as well as skin diseases; furthermore, the water properties favour to remove salt from bones and kidneys. The water temperature of one pool is 38°C, while the temperature of another one is three degrees colder.