Contents
Around 50% of the thermal spring water flows through the main tunnel: the Friedrichstollen. The water in the Friedrichsstollen has the following special features:
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 (organoleptic test)
| smell: | no smell |
| taste: | salty |
| colouring: | 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 contents. This taste gets stronger the hotter the water is consumed.

