Chaudfontaine
Chaudfontaine is a natural mineral water from the Ardennes region of eastern Belgium, bottled in the municipality of Chaudfontaine near Liège. The water emerges at a naturally elevated temperature of approximately 36°C at the source, a consequence of the depth and geothermal conditions of the aquifer. The brand is owned by Coca-Cola.
Mineral composition
| mg/L | |
|---|---|
| Calcium | 65 |
| Magnesium | 18 |
| Sodium | 44 |
| Sulfate | 40 |
| Chloride | 35 |
| Bicarbonate | 305 |
Compositions can vary by season and source. Read our methodology.
Mineral character
Calcium is 65 mg/L, magnesium 18 mg/L, sodium 44 mg/L, sulphate 40 mg/L, chloride 35 mg/L, and bicarbonate 305 mg/L. Hardness is 236 mg/L as CaCO₃ and TDS is approximately 510 mg/L. The profile is characterised by moderate hardness and elevated sodium and chloride relative to most Belgian waters. Bicarbonate is the dominant anion.
Use-case suitability
- CoffeeNot used in any current coffee recipe, but hardness 236 mg/L sits within the 9–266 mg/L range typical for these targets.
- TeaNot used in any current tea recipe. Hardness 236 mg/L is above the 37–59 mg/L range of these targets.
- BrewingNot used in any current brewing recipe, but hardness 236 mg/L sits within the 26–922 mg/L range typical for these targets.
- BakingNot used in any current baking recipe, but hardness 236 mg/L sits within the 46–390 mg/L range typical for these targets.
- AquariumNot used in any current aquarium recipe. Hardness 236 mg/L is above the 35–212 mg/L range of these targets.
- HorticultureNot used in any current horticulture recipe. Hardness 236 mg/L is above the 12–54 mg/L range of these targets.
Where to buy
NL
Albert Heijn, Jumbo, Colruyt, Delhaize
€0.40-0.50 per litre
BE
Albert Heijn, Jumbo, Colruyt, Delhaize
€0.40-0.50 per litre
Available in the Netherlands and Belgium. As of March 2026.