Sparkling water is just as hydrating as still water, according to a growing consensus among nutrition experts. The bubbles don't diminish its hydrating power — but a few details on the label deserve attention before you make it your go-to drink.
For anyone who has ever felt guilty reaching for a sparkling water instead of a flat one, the good news is clear: the choice between the two comes down mostly to preference, not performance. Nutritionist Bettina Sarhosoglu and dietitian Grace Derocha, cited in Today, both confirm that carbonated water contributes to daily hydration just as effectively as still water. The bubbles change the texture, not the outcome.
But as with most things in nutrition, the full picture is a little more nuanced than a simple yes or no.
Sparkling water hydrates as well as still water
The core question — does sparkling water actually hydrate you? — has a straightforward answer. Yes. The carbonation process adds CO2 to water, giving it its characteristic fizz, but it doesn't strip the water of its hydrating properties. What matters for hydration is the water itself, and that remains fully intact.
Colleen Muñoz, professor and director of the Hydration Health Center, explains on the American Heart Association website that mineral content plays a role in how efficiently the body retains water. When water lacks sufficient minerals, the body is more likely to eliminate it through urine rather than use it for cellular hydration. This applies to both flat and sparkling water — the key variable is the mineral composition of the specific water, not whether it's carbonated.
The mineral factor in hydration efficiency
Many sparkling waters are naturally rich in minerals such as magnesium, calcium, and bicarbonates, which can actually support the body's ability to absorb and retain fluids. A well-mineralized sparkling water, then, can be a genuinely effective hydration choice. The fizz is irrelevant to this equation. What matters is reading the label — something experts consistently recommend before making any sparkling water a daily staple.
Proper hydration isn’t just about the volume of water you drink — it’s also about how well your body retains it. Mineral-rich waters, sparkling or flat, tend to be better absorbed than demineralized options.
Sodium content is the detail that changes everything
Not all sparkling waters are created equal. Some are naturally high in sodium, and this is where things get more complicated. Consuming sparkling waters with a high salt content on a regular basis can be problematic for people with hypertension, cardiovascular conditions, kidney issues, or digestive disorders. For these individuals, the choice of water — sparkling or otherwise — warrants a conversation with a healthcare professional.
The Anses (France's national food safety agency) recommends that adults drink 1.5 to 2 liters of water per day. That's a significant volume, and if a portion of it comes from a very salty sparkling water, the cumulative sodium intake can become a real concern. The recommendation from nutrition experts is simple: consume high-sodium sparkling waters with moderation, and always check the label for sodium levels before buying.
When sparkling water actually has an edge
There is one specific context where sparkling water earns a genuine advantage over still water: post-exercise recovery. During intense physical activity, the body loses sodium through sweat. Rehydrating with a sparkling water that contains sodium can help replenish these losses more efficiently than plain flat water. Athletes and active individuals can therefore use certain mineral-rich sparkling waters strategically after a workout, without any concern about the carbonation itself.
This is also consistent with broader nutritional thinking. As Grace Derocha points out, the best water is the one you will actually drink in sufficient quantities. If the texture and taste of sparkling water makes it easier for someone to reach their daily hydration goals, then it is a perfectly valid choice.
of water per day recommended for adults by the Anses
Digestive comfort and the limits of carbonation
Sparkling water does come with one legitimate caveat: bloating. The Programme National Nutrition Santé (PNNS) flags that excessive consumption of carbonated beverages can lead to bloating and digestive discomfort. The CO2 that creates the bubbles is also the gas that accumulates in the digestive tract, and for people with sensitive stomachs or conditions like irritable bowel syndrome, this can be a real issue.
This doesn't make sparkling water a bad choice — it simply means that moderation and self-awareness matter. Drinking large quantities of sparkling water in a short period of time is more likely to cause discomfort than sipping it throughout the day. And for those with chronic digestive, cardiac, or renal conditions, the type of water consumed — including its mineral and sodium profile — is worth discussing with a doctor or dietitian.
Hydration also connects directly to how the body looks and feels from the outside. Skin texture, radiance, and even the effectiveness of anti-aging skincare routines depend heavily on adequate daily water intake. Whether that intake comes from flat or sparkling water is secondary to the consistency of the habit itself.
Sparkling water is a complement, not a replacement
One point that nutrition experts agree on: sparkling water does not replace a balanced diet. Minerals and electrolytes come primarily from food, and no water — however mineral-rich — can compensate for nutritional gaps elsewhere. If you're thinking about optimizing your diet for weight management, sparkling water can be part of a healthy routine, but it's a supporting player, not the main act.
The broader principle holds: hydration strategy should be personalized. A person who struggles to drink enough water throughout the day and finds sparkling water more appealing has every reason to embrace it. Someone with high blood pressure who has been reaching for a heavily salted sparkling variety every day has a reason to reconsider.
- Equally hydrating as still water
- Can be richer in minerals (magnesium, calcium, bicarbonates)
- Useful for post-exercise sodium replenishment
- More enjoyable for people who dislike plain water, encouraging higher intake
- Some varieties are high in sodium — a risk for people with hypertension
- Excessive consumption can cause bloating and digestive discomfort
- Not recommended without medical advice for cardiac, digestive, or renal conditions
The bottom line from the experts is reassuring. Sparkling water is a legitimate, effective way to stay hydrated. Read the label, pay attention to your body's response, and don't feel pressured to choose one over the other out of habit. Good hydration — like good skincare or a well-chosen daily routine — is about consistency and fit, not rigid rules.
