Understanding Sparkling Water: Seltzer vs. Mineral Water
Before diving into specific brands, it's helpful to understand the different types of carbonated water available in cans.
- Seltzer Water: This is plain water that is artificially carbonated by infusing it with carbon dioxide. It has no added minerals or flavors, offering a clean, neutral taste. This is often the purest option for those who want just water and bubbles.
- Sparkling Mineral Water: This water comes from a natural spring or well and is naturally carbonated, though sometimes extra CO2 is added. It contains naturally occurring minerals like sodium, magnesium, and calcium, which can affect its taste and provide extra nutrients. The mineral content varies depending on the source.
- Club Soda: Similar to seltzer, club soda is artificially carbonated water, but with added minerals like sodium bicarbonate and potassium sulfate. These are added to create a slightly salty or tangy taste and enhance its use as a mixer.
Key Factors for Choosing the Healthiest Option
When evaluating canned sparkling waters for their health benefits, several key factors should guide your decision. Always read the nutrition label and ingredient list carefully.
Zero Added Sugars and Artificial Sweeteners
The most significant factor in choosing a healthy sparkling water is the absence of added sugars and artificial sweeteners. Sugary drinks are linked to weight gain, dental decay, and other health issues, and sparkling water can be a great, zero-calorie replacement. Many flavored options use natural or artificial sweeteners, so checking the label is crucial. Some brands use plant-based sweeteners like stevia, while others opt for artificial ones that can affect the gut microbiome. The healthiest option is always unsweetened.
Low Sodium Content
For those watching their sodium intake, especially individuals with underlying kidney or heart issues, paying attention to sodium levels is important. Club soda, by definition, has added sodium. Some natural mineral waters also contain sodium, though typically in lower amounts than club soda. Most plain seltzers are naturally sodium-free. For the lowest sodium content, seek out plain seltzer or natural mineral waters that are explicitly low in sodium, like Aqua Carpatica.
Natural Flavors vs. Real Fruit
Flavored sparkling waters offer variety, but their flavoring source can differ. Some brands, like LaCroix and Bubly, use "natural essences" derived from the oils of fruits, which contain no calories or sugar. Other brands, most notably Spindrift, use a splash of real, squeezed fruit juice for flavor. This provides a more authentic taste but adds a small amount of natural sugar and calories. For the absolute healthiest choice, the purest option is unflavored water. However, if you prefer flavor, unsweetened options with fruit essence or a very small amount of real fruit juice are best.
Dental Health Considerations
While generally better for teeth than soda, sparkling water is still slightly acidic due to the carbonation process, which creates carbonic acid. Frequent sipping throughout the day, especially of citrus-flavored varieties with additional citric acid, can contribute to enamel erosion over time. To minimize risk, dentists recommend drinking flavored sparkling water with meals, using a straw, or rinsing your mouth with plain water afterward.
Packaging and Sustainability
For the environmentally conscious, the packaging material is a factor. Aluminum cans are generally considered more sustainable than plastic bottles due to their higher recycling rates and lighter weight for transport. Brands like Liquid Death have made canned water their signature, while many seltzers are also sold in recyclable cans.
Canned Sparkling Water Comparison Table
| Brand | Type | Sweeteners | Flavors | Sodium | Key Takeaway |
|---|---|---|---|---|---|
| Waterloo | Seltzer | None | Bold natural essences | Zero mg | Best for bold, zero-sugar flavor |
| LaCroix | Seltzer | None | Subtle natural essences | Zero mg | Best for mild, zero-sugar flavor |
| Spindrift | Sparkling + Real Juice | None (from fruit) | Real squeezed fruit juice | Low | Best for real fruit taste, some natural sugar |
| Bubly | Seltzer | None | Natural essences | Zero mg | Great widely available, zero-sugar option |
| Topo Chico | Mineral Water | None | Unflavored + some flavors | Low-Moderate | Best for high carbonation and minerals |
| AHA | Seltzer | None | Unique flavor pairings (essences) | Zero mg | Good variety of zero-sugar, zero-sodium flavors |
Choosing a Brand: Our Top Picks
Best Unsweetened Option
For the purest and healthiest choice, any plain seltzer water without added ingredients is ideal. Waterloo offers a great range of zero-sugar, zero-sodium flavored options if you want a more distinct taste than LaCroix.
Best for Natural Fruit Flavor
Spindrift is the clear winner here, as it uses real squeezed fruit juice. This is a great choice if you prefer a less artificial taste and don't mind a few calories from the fruit itself.
Best for Mineral Content
Natural mineral waters like Topo Chico and Gerolsteiner contain minerals that can offer additional health benefits and a distinctive taste. For those with no mineral-restrictive conditions, this can be a great way to re-mineralize. Note that some brands contain a moderate amount of sodium naturally.
Best Budget-Friendly Option
Brands like Bubly and Polar Seltzer are widely available and offer a budget-friendly way to enjoy sparkling water without sacrificing health standards. They typically contain zero calories, sweeteners, or sodium.
Conclusion: The Final Verdict
Ultimately, the healthiest canned sparkling water is an unflavored, unsweetened seltzer or natural mineral water. These options offer hydration without any added calories, sugars, or artificial ingredients. However, high-quality flavored seltzers, like those from Waterloo or LaCroix, that use natural essences without sweeteners are also excellent choices. For an authentic taste with minimal natural fruit sugar, Spindrift is a fantastic option. By prioritizing a clean ingredient list and considering factors like sodium and dental health, you can easily find a canned sparkling water that fits a healthy lifestyle.
For more dietitian-backed advice on sparkling water, read this article from TODAY.com on the topic: Is Sparkling Water Good For You? Dietitians Explain.