Which bottled water does not have sodium in it? A Guide to Zero-Sodium Options

October 9, 2025 •

4 min read

Most purified and distilled bottled waters have virtually zero sodium due to the treatment processes they undergo, making it possible to find a brand that does not have sodium in it. Knowing the different types of bottled water and their processing methods is key to selecting the right option for a sodium-controlled diet. High sodium intake is a major contributor to health concerns like high blood pressure, making water choice a crucial factor in managing overall wellness.

Quick Summary

This guide explains which types of bottled water contain zero or low sodium, detailing the purification processes that remove minerals like sodium. A comparison of water types and a list of specific brands help consumers make informed choices for managing their sodium intake effectively.

Key Points

Purified and distilled water are your best options: These water types undergo rigorous filtration processes like reverse osmosis and distillation, which remove dissolved solids, including sodium.
Check the label for 'sodium-free': Brands like Aquafina, Dasani, and Smartwater are known for their zero-sodium content, but it's always wise to verify the nutritional information.
Understand water categories: Natural spring and mineral waters can contain varying amounts of sodium, as they naturally collect minerals from the environment, so check their specific mineral analysis.
Balance water choice with a healthy diet: While beneficial for sodium control, exclusive long-term consumption of demineralized water is not recommended by the WHO, as it may cause a mineral imbalance.
Low-sodium and zero-sodium are different: The U.S. Food and Drug Administration defines 'sodium-free' as less than 5 mg per serving, so even 'low-sodium' may contain a small amount.
Regional brands offer zero-sodium options: Some companies, particularly in regions where low-sodium is a major market trend, explicitly label their products as zero-sodium, such as Masafi Zero and Al Ain Zero.

The Science Behind Sodium in Bottled Water

Water naturally contains minerals and ions, including sodium, which it picks up from the ground and rock formations it passes through. The amount of sodium varies significantly depending on the source, with natural spring or mineral waters often containing more than purified water. However, modern filtration and processing techniques can effectively remove these minerals, yielding a product that contains either very little or no sodium at all. For individuals adhering to a low-sodium diet, understanding these processes is essential.

The Purification Process and Sodium Removal

Bottled water can undergo several types of purification to achieve its final mineral and taste profile. Distillation and reverse osmosis are the two primary methods used to remove dissolved solids, including sodium, from water.

Distillation: This process involves boiling the water and then condensing the steam, leaving all the non-volatile minerals and impurities, including sodium, behind. The resulting water is exceptionally pure, though it can taste 'flat' due to the absence of minerals.
Reverse Osmosis (RO): This method forces water through a semipermeable membrane that filters out most dissolved solids, including sodium ions. Many bottled water companies use RO and then add a controlled blend of electrolytes back in to improve taste, but these are typically not sodium-based.

Types of Bottled Water and Their Sodium Content

Not all bottled water is created equal when it comes to sodium. The terminology on the label is your best indicator of what to expect.

Purified Water: As the name suggests, this water has been processed to remove chemicals and contaminants. Many purified waters, like Aquafina and Dasani, use reverse osmosis and contain virtually no sodium.
Distilled Water: A type of purified water where the distillation process has removed all minerals. This is your safest bet for a zero-sodium option.
Spring Water: This water is sourced from an underground formation from which water flows naturally to the surface. Since it collects minerals from the earth, its sodium content will vary. Some spring waters have very low sodium (e.g., Aqua Carpatica, Voss), while others may have higher levels.
Mineral Water: Defined by its constant level of minerals and trace elements, mineral water generally has a higher sodium content than other types, as these minerals are a core characteristic of the product. For example, San Pellegrino and Perrier contain naturally occurring sodium from their spring sources.

Comparison of Water Types and Sodium Content


Type of Water	Sodium Content	Other Minerals	Typical Process	Best For...
Distilled Water	Zero	None	Boiling and condensing steam	Applications requiring mineral-free water; low-sodium diets.
Purified Water	Typically Zero or Trace (<5 mg/L)	Re-added for taste (not sodium)	Reverse Osmosis, deionization, filtration	Reliable low-sodium option; balanced taste.
Spring Water	Varies (can be low)	Varies, naturally occurring	Filtration, sometimes minimal treatment	Natural mineral profile, variable sodium.
Mineral Water	Varies (often higher)	Constant, specific to source	Bottled at source, minimal processing	Flavor preference, natural mineral intake.

Top Brands with Zero or Very Low Sodium

When searching for a truly sodium-free option, check the nutrition label for the sodium content per serving. Here are some brands known for having zero or very low sodium content:

Aquafina: Uses a purification process that includes reverse osmosis, deionization, and activated carbon filtration, resulting in a sodium-free product.
Dasani: A purified water that uses reverse osmosis and is enhanced with minerals for taste, without adding sodium.
Smartwater: This vapor-distilled water is enhanced with a proprietary blend of electrolytes, but not sodium, for a clean, crisp taste.
Nestlé Pure Life: This brand offers varieties that are sodium-free due to the purification process.
Masafi Zero: Specifically marketed as a zero-sodium bottled water option, popular in the Middle East.
Al Ain Zero: Another brand explicitly labeled as sodium-free, suitable for low-sodium diets.

Important Considerations for a Zero-Sodium Diet

Choosing zero-sodium water can be beneficial for managing conditions like hypertension, but it's important to consider all aspects of your hydration needs. Drinking demineralized water exclusively and long-term is not recommended by the World Health Organization, as it may lead to a depletion of essential minerals from the body. While the amount of minerals gained from water is small, it contributes to overall intake. A balanced diet remains the primary source of necessary minerals.

Consulting a healthcare professional or a registered dietitian is always recommended for individuals on a restricted diet, especially if considering a significant change like relying solely on demineralized water for hydration.

Conclusion

For those needing to control their sodium intake, several bottled water options provide virtually zero sodium. Purified and distilled waters, which undergo advanced filtration processes like reverse osmosis and distillation, are the most reliable choices. Brands like Aquafina, Dasani, and Smartwater are widely available zero-sodium options. However, for those concerned with mineral content, a natural spring water with a verified low sodium level could be a viable alternative. Always remember to check the nutritional information on the label and consider a balanced dietary approach to ensure you receive all necessary nutrients. By making an informed decision, you can easily find a bottled water that fits your specific dietary requirements.

Frequently Asked Questions

Purified water, which often uses reverse osmosis, has virtually all minerals removed, including sodium, resulting in a zero-sodium content. However, some companies add small amounts of electrolytes back for taste, so checking the label is still best.

No, distilled water does not contain sodium. The distillation process of boiling and condensing water leaves all minerals, including sodium, behind, creating a highly purified and demineralized product.

Mineral water is generally not ideal for a low-sodium diet, as its defining feature is its mineral content, which often includes sodium. Always check the label, as the sodium level varies widely between brands.

The World Health Organization warns against long-term, exclusive consumption of demineralized water, as it may lead to a mineral imbalance and potentially pose health risks. A balanced diet is essential for obtaining necessary minerals like calcium and magnesium.

Yes, Aquafina is a purified water brand that undergoes a multi-step purification process, including reverse osmosis, which removes sodium and other dissolved solids, resulting in a sodium-free beverage.

The most reliable method is to check the nutrition label on the bottle. Look for brands that are explicitly labeled as purified or distilled. The label should clearly state "0mg" of sodium per serving.

Not necessarily. While some brands might be, others, particularly mineral-based sparkling waters like Perrier or San Pellegrino, contain naturally occurring sodium. Always check the label for sodium content.