Thermal water

The thermal water has its source on the slopes of the Florentinerberg in Baden-Baden.

From depths of between 1200 and 1800 metres, the water reaches the surface at temperatures ranging from 56°C - 68.8°C from a total of twelve separate sodium chloride-bearing artesian springs. The springs are approximately 12,000 - 17,000 years old and discharge around 800,000 litres of thermal water a day (that's 9 litres a second) with a daily mineral content of 2,400 kg.

As a result, no other water in the state of Baden-Württemberg has such a high concentration of minerals as this one.

Around 50% of the thermal spring water flows through the main catchment tunnel: the Friedrichstollen. The water in the Friedrichsstollen has the following characteristics:


Chemical analysis:
Natrium: 771 mg/kg
Chloride: 1205 mg/kg
Fluoride: 5.3 mg/kg


Physical and chemical analysis:
Temperature: 65.5°C
pH Value: 7.6
Density at 20°C: 1.0006 dm³/kg
Radon content: 10 Bq/kg


Sensory evaluation:
Smell: no smell
Taste: salty
Colour : colourless
Cloudiness: clear
Sediment: none

The thermal spring water of Baden-Baden is also referred to as natrium-chloride thermae containing fluoride. The water gets its mild salty taste from these two main elements. This taste gets stronger the hotter the water is consumed.

The mineral-rich Baden-Baden thermal water regenerates, stimulates and activates the entire body. It also has a relaxing effect on the muscles and helps to alleviate stress. The thermal water of the Caracalla Spa contains active agents that have a specific impact on your body. In order to achieve the best results, the thermal water should be enjoyed in moderation.

Immerse yourself in Baden-Baden's liquid gold and relish the beneficial effects on mind, body and soul.