In medicine, water has long been known as a natural remedy. Even the Romans built magnificent baths in which fresh spring or thermal water was used to strengthen the body and mind. Today, spas and health resorts use the effects of water in different ways.
Mineral thermal water
Thermal water is characterized by a high temperature at the source: It has to be at least 20 degrees Celsius before it can be called thermal water.
Brine water
On its way through countless layers of rock, salts from the primeval sea can also dissolve in the water. This creates a salty brine that is used for therapeutic purposes. Only water with at least 5.5 g sodium and 8.5 g chloride ions per liter can be called brine.
Water containing sulphur and radon
Sounds toxic, but it's not: water containing sulphur and radon has also been used in healing medicine for some time. Sulphur baths have a therapeutic function for skin diseases and rheumatism. The radioactive noble gas radon can be found in small doses in some springs. Radon water is used as a drinking cure or bath in various therapies.
CO2
The carbonic acid bath is a bath that is mixed with carbon dioxide. The substance turns into carbonic acid in the bath water, which is absorbed through the skin. Carbonic acid baths can promote blood circulation, lower blood pressure, improve the oxygen supply to organs, relieve pain and combat inner restlessness.
Awards serve as a seal of quality in health tourism. In order to receive an award, certain standards must be met in the area of medical facilities and tourist infrastructure. The state's health resort law defines these requirements.
Mineral/thermal spa
Not every spring is a thermal spring: for the title thermal spa, the water at the spring must be at least 20 degrees Celsius. If the thermal water also contains valuable minerals and trace elements, then the spa town can call itself a mineral thermal spa. The healing waters come from natural local springs. If the temperature of the mineral-rich water is less than 20 degrees Celsius, it is called mineral water - thus the spa is a mineral spa.
Brine spa
In order for a spa to be called a brine spa, 5.5 grams of sodium ions and 8.5 grams of chloride ions must be contained in one litre of water. In Baden-Württemberg there are a total of six spas with brine.