Sodium (Na⁺)
Primary extracellular electrolyte. Lost in sweat — critical to replace during endurance exercise or heat exposure. WHO daily limit ~2,000 mg.
Top sources: Vichy Catalan, Apollinaris, Badoit
Hydration is more than water. Compare bottled waters by sodium, potassium, magnesium, calcium and bicarbonate — and pick the right one for sport, daily health or low-sodium needs.
| Brand | Country | Na | K | Mg | Ca | HCO₃ | Best for |
|---|---|---|---|---|---|---|---|
| Vichy Catalan | Spain | 1110 | 6.3 | 9 | 53 | 2,081 | Endurance + after intense sweating |
| Apollinaris | Germany | 470 | 25 | 130 | 90 | 1,810 | Magnesium top-up, post-workout |
| Gerolsteiner | Germany | 118 | 11 | 108 | 348 | 1,816 | Daily electrolyte balance |
| Badoit | France | 165 | 10 | 85 | 190 | 1,300 | Magnesium + bicarbonate buffer |
| San Pellegrino | Italy | 33.7 | 2.7 | 53.5 | 178 | 219 | Calcium + magnesium with meals |
| Contrex | France | 9.4 | 3.2 | 74.5 | 468 | 372 | Calcium-rich, low sodium |
| Vittel | France | 5 | 2 | 43 | 240 | 402 | Calcium without sodium |
| Ferrarelle | Italy | 49 | 43 | 18 | 365 | 1,418 | Potassium-rich sparkling option |
| Perrier | France | 9 | 0.6 | 3.4 | 147 | 390 | Light electrolytes + bubbles |
| Evian | France | 6.5 | 1 | 26 | 80 | 360 | Balanced daily hydration |
| Evamor | USA | 95 | 1.5 | 1 | 5 | 230 | Bicarbonate-forward, alkaline |
| Fiji | Fiji | 18 | 5 | 15 | 18 | 154 | Silica + mild electrolytes |
| Mountain Valley | USA | 3 | 0.5 | 9 | 65 | 220 | Low-sodium spring option |
| Waiakea | USA | 11.6 | 3.5 | 3.4 | 7.4 | 58 | Mild electrolyte alkaline |
| Essentia | USA | 9 | 2 | 0.4 | 0.6 | 30 | Added electrolytes only |
Primary extracellular electrolyte. Lost in sweat — critical to replace during endurance exercise or heat exposure. WHO daily limit ~2,000 mg.
Top sources: Vichy Catalan, Apollinaris, Badoit
Supports muscle contraction and nerve function. Most bottled waters are low in potassium; Ferrarelle and Apollinaris are exceptions.
Top sources: Ferrarelle, Apollinaris, Fiji
Energy metabolism, muscle relaxation, cardiac rhythm. RDI: 320–420 mg/day. Often under-consumed.
Top sources: Apollinaris, Gerolsteiner, Badoit, Contrex
Bone health, muscle function, blood clotting. RDI: 1,000 mg/day for adults.
Top sources: Contrex, Ferrarelle, Gerolsteiner, Vittel
Acid–base buffer. Helps neutralize lactic acid build-up and supports recovery; useful for athletes and reflux sufferers.
Top sources: Vichy Catalan, Gerolsteiner, Apollinaris, Badoit, Ferrarelle
For overall electrolyte intake, Gerolsteiner (Germany) is the best-balanced choice — high calcium (348 mg/L), magnesium (108) and bicarbonate (1,816) with only moderate sodium (118). For sweat replacement, Vichy Catalan and Apollinaris deliver the most sodium; for magnesium specifically, Apollinaris (130 mg/L) leads.
Apollinaris (130 mg/L), Gerolsteiner (108 mg/L), Badoit (85 mg/L) and Contrex (74.5 mg/L) lead the magnesium ranking. A single liter of Apollinaris covers ~30% of an adult's daily magnesium requirement.
For moderate exercise, a high-mineral water like Gerolsteiner or Badoit provides meaningful sodium, calcium, magnesium and bicarbonate without added sugar. For prolonged endurance work (>90 minutes) where carbohydrates and very high sodium losses matter, a purpose-formulated sports drink still has an edge.
Yes for many people. High-mineral waters can close gaps in dietary calcium and magnesium intake. However, very high sodium waters (Vichy Catalan, Apollinaris) should be moderated — a single liter of Vichy Catalan covers ~50% of the WHO daily sodium limit.
Among naturally alkaline waters, Gerolsteiner (pH 6.0 but very high bicarbonate buffering), Evamor (pH 8.8 with 230 mg/L bicarbonate) and Icelandic Glacial (pH 8.4) are the most mineral-loaded. Brand-added 'electrolyte' waters like Essentia and Smartwater contribute much smaller amounts.
Contrex (sodium 9.4 mg/L) and Vittel (5 mg/L) deliver high calcium and magnesium with very little sodium — ideal for people watching blood pressure who still want electrolyte support.
