Thermal water

from its source on the slopes of the Florentinerberg.

Thermal water

Origins of the 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.

Healthy bathing

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.