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Mineral Water with High Magnesium in the UK: Top 5 Compared
Among the mineral waters available in the UK in the h2oMatch database, these have the highest magnesium values.
While domestic mineral waters available in the UK tend to have moderate magnesium levels, the UK market is enriched by imports from some of Europe's most magnesium-rich sources.
Mineral waters with the most magnesium in the UK — top 5 by magnesium content.
The ranking covers natural mineral waters available on the UK market listed in the h2oMatch database.
| Water | Magnesium (mg/L) | Calcium (mg/L) | Fixed residue (mg/L) |
|---|---|---|---|
| Aqua Carpatica Sparkling | 84.7 | 288 | 1035 |
| Badoit | 80 | 153 | 1100 |
| San Pellegrino | 49.6 | 174 | 862 |
| Evian | 26 | 80 | 345 |
| Buxton | 19 | 55 | 280 |
Aqua Carpatica and Badoit have similar magnesium and bicarbonate levels, but Badoit contains 180 mg/L sodium compared with 4.85 mg/L for Aqua Carpatica. After San Pellegrino, magnesium drops below 30 mg/L.
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Get your h2oMatch recommendationMagnesium in UK mineral waters
A water may carry the indication ‘contains magnesium’ when magnesium exceeds 50 mg/L. On the UK market, only the leading imported waters such as Aqua Carpatica from Romania and Badoit from France reach this threshold.
British-sourced mineral waters typically have more moderate magnesium levels due to the local geology. Among domestic options, Brecon Carreg provides 15 mg/L.
Want to understand why magnesium matters? Read our guide on magnesium in mineral water →
Explore magnesium-rich waters across Europe and by country
Compare UK market waters with the highest magnesium mineral waters across Europe, or explore options in other countries.
Explore Other Water Profiles in United Kingdom
Looking for a different mineral balance? Explore other types of mineral waters available in United Kingdom.
FAQ
Which mineral water has the most magnesium in the UK?
Aqua Carpatica leads with 84.7 mg/L, followed by Badoit (80 mg/L) and San Pellegrino (49.6 mg/L). Values come from official labels; the top 5 is in the table above.
When may a water carry the indication 'contains magnesium'?
The official indication ‘contains magnesium’ can be used on a label when a water's magnesium content is over 50 mg/L.
What is the highest-magnesium British water?
Buxton, with 19 mg/L, tops the domestic field. It sits well below the imported leaders, which reflects the geology of British springs rather than any shortcoming of the brands.
How much magnesium can mineral water contribute per day?
A litre of Aqua Carpatica Sparkling contains 84.7 mg of magnesium. For context, EFSA sets an adequate intake of 300 mg per day for adult women and 350 mg for adult men. Water does not replace a balanced diet, but it can complement it without calories.
What does magnesium-rich water taste like?
At higher concentrations magnesium gives water a slightly bitter note, one reason strongly mineralized waters have a more assertive character. The table above also includes milder options with moderate magnesium.
All values are based on official mineral water labels and the h2oMatch database.