Mineral Water Guide
Sodium in Mineral Water
What It Is, Why It Matters, and How Levels Vary Between Waters
Sodium is one of the most variable minerals in bottled water - ranging from less than 0.2 mg/L in some alpine springs to over 1,000 mg/L in certain therapeutic waters. That is a difference of more than 5,000×, between bottles sitting on the same supermarket shelf.
For most people, sodium in water is a minor contributor to total daily intake. But if you drink two liters a day of a high-sodium water, it adds up - and if you are actively managing sodium intake for blood pressure or heart health, it is the first number worth checking on any label.
What Sodium Does in the Body
Sodium contributes to several normal physiological functions, including:
Most of your daily sodium comes from food - not water. But water consumed at 1-2 liters per day is a consistent, daily source. Small differences compound over months.
How Sodium Levels Vary in Mineral Water
Sodium levels depend on the geological environment through which the water flows underground.
Typical ranges include:
| Sodium Level | Typical Range |
|---|---|
| Very low | < 5 mg/L |
| Low | 5-20 mg/L |
| Moderate | 20-200 mg/L |
| High | > 200 mg/L |
For reference, in the European Union a mineral water labeled "low sodium" typically contains less than 20 mg/L.
Mineral Waters with Very Low Sodium Levels
Examples of mineral waters known for very low sodium content include:
| Water | Country | Sodium (mg/L) |
|---|---|---|
| Acqua Eva | 🇮🇹 Italy | 0.3 |
| S. Bernardo | 🇮🇹 Italy | 0.8 |
| Aqua Carpatica | 🇷🇴 Romania | 0.7 |
Values based on official label data.
These waters contain very small amounts of sodium, often below 10 mg/L.
Mineral Waters with Higher Sodium Levels
Examples of mineral waters known for relatively high sodium content include:
| Water | Country | Sodium (mg/L) |
|---|---|---|
| St-Yorre | 🇫🇷 France | 1,708 |
| Donat Mg | 🇸🇮 Slovenia | 1,565 |
| Vichy Célestins | 🇫🇷 France | 1,172 |
These examples illustrate how some natural mineral waters can contain very high sodium concentrations compared with typical drinking water.
Who benefits most from low-sodium water
Low-sodium water (below 20 mg/L) is worth prioritizing if you:
- Are managing blood pressure or following a low-sodium diet
- Drink water in high daily volumes
- Prefer a lighter, cleaner taste with no mineral edge
Many of Europe's best low-sodium waters - Acqua Eva, S. Bernardo, Aqua Carpatica - contain less than 1 mg/L. That is effectively zero.
When higher sodium makes sense
Some people actively seek more mineralized waters, for example:
- Those who enjoy a fuller, more mineral taste
- People who are replacing electrolytes after intense exercise
- Anyone exploring traditional European spa waters with distinctive profiles
At moderate levels (20-100 mg/L), sodium adds a subtle body to the water without being noticeably salty.
Sodium works best as one criterion among several. Our guide on How to choose the right mineral water puts it in context.
Sodium and Overall Mineral Composition
Sodium is only one element of a water's mineral composition. Considering the full mineral profile helps provide a more complete understanding of how different waters compare.
Read also about the other parameters typically listed on mineral water labels:
Key Takeaway
Sodium in mineral water ranges from almost nothing to very high levels. Check the label - the number is always there.
For everyday hydration, below 20 mg/L is generally considered low sodium. Below 1 mg/L means it is effectively not a factor.
FAQ
How much sodium is in mineral water?
Sodium levels vary widely. Some waters contain less than 1 mg/L, while others exceed 1,000 mg/L.
What is considered low sodium water?
In the European Union, mineral water labeled "low sodium" typically contains less than 20 mg/L.
Do all mineral waters contain sodium?
Yes, but the amount varies greatly depending on the source.
Does sodium make water taste salty?
Taste perception depends on the combination of minerals present in the water, not only on sodium levels.