Mineral content
Does Mineral Water Contain Calcium and Magnesium?
Yes. By definition, mineral water carries dissolved minerals from the source rock it passed through — most commonly calcium, magnesium, sodium, and bicarbonate. The actual amount depends entirely on the brand.
How much calcium do mineral waters deliver?
Adult RDA for calcium is roughly 1,000 mg/day. A single liter of high-mineral waters can cover 15–35% of that:
- Gerolsteiner — 348 mg/L
- S.Pellegrino — 208 mg/L
- Perrier — 147 mg/L
- Evian — 80 mg/L
- FIJI — 18 mg/L
How much magnesium?
Adult RDA is 310–420 mg/day. Magnesium-rich waters can deliver 10–35% of that per liter:
- Gerolsteiner — 108 mg/L
- S.Pellegrino — 55 mg/L
- Flow Water — 23 mg/L
- FIJI — 15 mg/L
- VOSS — 0.4 mg/L
Why bioavailability matters
Multiple studies show that calcium and magnesium from mineral water are absorbed about as well as from dairy and supplements. For people who don't tolerate dairy, mineral water can be a meaningful source of both minerals.
Frequently asked questions
Which bottled water has the most calcium?
Among widely sold brands, Gerolsteiner is the clear leader at 348 mg/L.
Can I get all my calcium from mineral water?
Realistically no — even Gerolsteiner only covers ~35% of daily needs per liter. Mineral water complements a balanced diet rather than replacing other sources.
Instant PDF. Every major brand ranked by pH, minerals, source and taste.
What should you do next?
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