Is Sparkling Water Hydrating?
Everything you need to know about carbonated water and its hydration properties.
Yes, sparkling water is just as hydrating as still water. The carbonation (dissolved carbon dioxide) does not reduce water's ability to hydrate your body. Studies have found no meaningful difference in hydration status between people who drink sparkling water versus still water.
Key Facts
Carbonation Does Not Reduce Hydration
The carbon dioxide gas that creates bubbles dissolves in water and is expelled through breathing. It does not interfere with water absorption in the gut or cellular hydration.
May Help You Drink More
Many people find sparkling water more enjoyable than still water. If carbonation encourages you to drink more fluids, it can actually improve your overall hydration.
Watch for Added Ingredients
Plain sparkling water (seltzer or club soda) is ideal. Flavored sparkling waters may contain added sugars, sweeteners, or sodium that change the nutritional profile.
Minimal Impact on Dental Health
Plain sparkling water is only slightly more acidic than still water (pH ~5 vs ~7) and poses minimal risk to tooth enamel. Citrus-flavored varieties are more acidic and should be consumed in moderation.
What the Research Says
Sparkling water hydrates equally to still water
A 2016 randomized trial found no statistically significant difference in hydration biomarkers between participants consuming still water and those consuming carbonated water over a 24-hour period.
Source: American Journal of Clinical Nutrition (2016)
Carbonated water may improve swallowing ability
Research shows that carbonated water can stimulate the nerves responsible for swallowing, potentially benefiting people with swallowing difficulties.
Source: European Journal of Gastroenterology & Hepatology
No evidence of bone density reduction from carbonated water
While cola beverages have been linked to lower bone density (likely due to phosphoric acid), plain sparkling water has not shown any negative effects on bone health.
Source: American Journal of Clinical Nutrition, Tucker et al. (2006)
Practical Tips
- Choose plain sparkling water, seltzer, or mineral water without added sugars
- Read labels on flavored varieties to check for hidden sugars and sodium
- If still water feels boring, switching to sparkling water is a great zero-calorie alternative to soda
- Avoid drinking large amounts of sparkling water right before exercise as carbonation can cause bloating
- Mineral sparkling water can provide beneficial minerals like calcium and magnesium
- Count sparkling water equally toward your daily hydration goals
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Water Intake CalculatorFrequently Asked Questions
Is sparkling water bad for your stomach?
For most people, sparkling water is perfectly fine. The carbonation may cause temporary bloating or gas in some individuals. People with IBS or acid reflux may want to limit intake if it worsens symptoms.
What is the difference between seltzer, club soda, and sparkling mineral water?
Seltzer is plain water with added CO2. Club soda has added minerals like sodium bicarbonate. Sparkling mineral water is naturally carbonated from a spring and contains natural minerals. All three are equally hydrating.
Can sparkling water replace still water entirely?
Yes, you can meet your hydration needs entirely with sparkling water if you prefer it. There is no nutritional reason to choose still over sparkling. Just watch for added sugars in flavored varieties.
Does sparkling water cause kidney stones?
No. There is no evidence linking sparkling water to kidney stones. In fact, staying well-hydrated with any type of water is one of the best ways to prevent kidney stone formation.
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