Hildon
Delightfully Still
Hildon is a natural mineral water bottled at the Broughton estate in Hampshire, England. The brand was founded in 1989 by Christian Heppe and remains independently owned. Water from the Hampshire chalk aquifer is filtered naturally over an estimated 50-year cycle before reaching the source borehole. Hildon is sold exclusively in glass bottles.
Mineral composition
| mg/L | |
|---|---|
| Calcium | 97 |
| Magnesium | 2 |
| Sodium | 8 |
| Sulfate | 4 |
| Chloride | 16 |
| Bicarbonate | 136 |
Compositions can vary by season and source. Read our methodology.
Mineral character
Calcium is 97 mg/L, magnesium 2 mg/L, sodium 8 mg/L, sulphate 4 mg/L, chloride 16 mg/L, and bicarbonate 136 mg/L. Hardness is 250 mg/L as CaCO₃, reflecting the chalk geology. Magnesium is unusually low relative to calcium, a characteristic feature of chalk-filtered waters. Sulphate is also notably low, distinguishing Hildon from some other hard English waters with more sulphate in the profile. The profile is dominated by calcium and bicarbonate in roughly equal hardness-equivalent contribution.
Use-case suitability
- CoffeeNot used in any current coffee recipe, but hardness 250 mg/L sits within the 9–266 mg/L range typical for these targets.
- TeaNot used in any current tea recipe. Hardness 250 mg/L is above the 37–59 mg/L range of these targets.
- BrewingNot used in any current brewing recipe, but hardness 250 mg/L sits within the 26–922 mg/L range typical for these targets.
- BakingNot used in any current baking recipe, but hardness 250 mg/L sits within the 46–390 mg/L range typical for these targets.
- AquariumNot used in any current aquarium recipe. Hardness 250 mg/L is above the 35–212 mg/L range of these targets.
- HorticultureNot used in any current horticulture recipe. Hardness 250 mg/L is above the 12–54 mg/L range of these targets.
Where to buy
UK
Waitrose, Sainsbury’s
£1.50-2.50 per litre
Available at Waitrose and Sainsbury’s in the UK, and by direct order from hildon.com. Stocked by specialist hospitality suppliers. As of March 2026.