Gravatal is a municipality in the state of Santa Catarina in the South region of Brazil. Located in a mountainous area, Gravatal has been a centeā¦Gravatal is a municipality in the state of Santa Catarina in the South region of Brazil. Located in a mountainous area, Gravatal has been a center for relaxation and health treatment for many years. Due to the heated water, that flows out from the soil at 37 °C and it is divided and supplies four local hotels and an aquatic complex. The spring water contains chemicals such as fluorine and lithium.