Does Sparkling Water Count as Water? Hydration Myths Answered
Yes — sparkling water counts fully toward your daily water intake. Research confirms that carbonated water hydrates as effectively as still water. The bubbles do not reduce hydration, cause dehydration, or leach calcium from bones. For most people, sparkling water is a perfectly valid way to hit daily fluid targets.
Introduction
Sparkling water has been unfairly maligned for years. It dehydrates you. It leaches calcium from your bones. It damages your teeth. It doesn't count as real water. Most of these claims are either completely false or so overstated they've become myths — and they're stopping a lot of women from drinking something they genuinely enjoy.
Let's go through the science. Because if sparkling water is what makes you drink more, then sparkling water is what you should be drinking.
Does sparkling water hydrate you as well as still water?
Yes — the research on this is clear and consistent.
A 2016 study published in the American Journal of Clinical Nutrition found no significant difference in hydration between still and sparkling water. Brewed sparkling water is approximately 99% water with dissolved CO2 — the carbonation creates the bubbles but doesn't change the water's ability to hydrate cells.
Your body absorbs water from sparkling and still drinks through the same mechanisms. The CO2 gas is released through burping or absorbed and exhaled through your lungs — it doesn't interfere with hydration at the cellular level.
Bottom line: Sparkling water counts 100% toward your daily fluid intake. How much fluid women need daily →
Does sparkling water damage your teeth?
This one has a grain of truth but is wildly overstated.
Plain sparkling water (no flavouring, no citric acid) has a pH of around 3–4, making it mildly acidic — compared to still water's neutral pH of 7. This mild acidity can theoretically soften tooth enamel with prolonged, frequent direct contact.
The reality: studies show that plain sparkling water's effect on tooth enamel is significantly less erosive than orange juice, wine, or fizzy soft drinks. It's not zero, but it's negligible in normal drinking patterns.
What does increase the risk: flavoured sparkling waters that contain citric acid or fruit flavourings. These are meaningfully more acidic than plain sparkling water and more likely to affect enamel with regular sipping throughout the day.
Practical guidance: If you drink plain sparkling water through a straw, the contact with teeth is reduced further. Rinsing with still water afterwards is also sufficient. Plain sparkling water is not a meaningful dental risk for most people.
Does sparkling water leach calcium from bones?
No — this myth came from research on cola drinks, not sparkling water.
The original concern was tied to phosphoric acid, which is found in cola drinks and does affect calcium metabolism. Plain sparkling water contains no phosphoric acid. The confusion between "fizzy drinks" and "sparkling water" allowed a cola-related finding to be misapplied to carbonated water.
Multiple studies specifically on sparkling water and bone density have found no negative effect. One study found that sparkling mineral water actually improved bone mineral density compared to still water, due to its calcium and magnesium content.
Does sparkling water cause bloating?
For some people, yes — temporarily. The CO2 gas can cause bloating or gas in those who are sensitive to carbonation, particularly if drunk quickly or in large amounts on an empty stomach.
This is an individual sensitivity, not a universal effect. Many people drink sparkling water daily with no digestive issues whatsoever.
If you find sparkling water causes bloating, drinking it slowly, avoiding it on an empty stomach, or switching to still water during the luteal phase (when bloating from progesterone is already higher) are all practical solutions.
Can you put sparkling water in a stainless steel tumbler?
Yes — completely safe. The mild acidity of sparkling water does not react with 18/8 food-grade stainless steel under normal use. You can store sparkling water in your stainless steel tumbler without any chemical interaction or safety concern.
One practical note: a leakproof lid is important when carrying carbonated drinks — the pressure from carbonation can cause non-leakproof lids to drip. The BriteLune tumbler's leakproof flip lid handles carbonated drinks without issue. Full guide to what you can put in stainless steel →
5 other hydration myths worth knowing
Myth 1: You need to drink 8 glasses of water a day The "8x8" rule has no specific scientific basis. Women need approximately 74oz (2.2 litres) from drinks daily — which is closer to 9 cups, not 8. And that number shifts with your cycle, activity level, and climate. The real daily water recommendation for women →
Myth 2: If you're thirsty, you're already dehydrated Mild thirst is a normal, functional signal — not a sign of significant dehydration. Thirst becomes a less reliable indicator in older adults and during intense exercise, but for most women in normal daily life, responding to thirst is a reasonable hydration strategy alongside consistent drinking habits.
Myth 3: Coffee dehydrates you Coffee's mild diuretic effect is offset by its water content. Moderate coffee consumption (2–3 cups per day) contributes to daily fluid intake rather than depleting it. The full truth about coffee and hydration →
Myth 4: Clear urine means you're well hydrated Consistently clear urine can indicate overhydration — drinking more than your kidneys can efficiently process. The goal is pale straw yellow, not completely clear. Dehydration signs to watch for →
Myth 5: You only need to hydrate when you're hot or exercising Your body loses fluid continuously — through breathing, digestion, and normal cellular function — regardless of temperature or activity. Consistent hydration throughout the day matters more than drinking large amounts reactively.
What counts toward daily fluid intake?
Most people underestimate how many of their daily drinks contribute to hydration. Everything below counts:
- Still water ✅
- Sparkling water ✅
- Coffee and tea ✅ (mild diuretic effect is offset by water content)
- Herbal teas ✅
- Milk ✅
- Fruit juices ✅ (though high sugar content makes water a better choice)
- Smoothies ✅
- Broth and soups ✅
- Water-rich foods (cucumber, watermelon, strawberries) ✅ — account for ~20% of daily intake
What doesn't help: alcohol, which is actively diuretic and increases fluid loss rather than contributing to it.
FAQ
Does sparkling water count as water intake? Yes — sparkling water counts fully toward daily fluid intake. Research confirms it hydrates as effectively as still water. The carbonation does not reduce its hydrating properties.
Is sparkling water bad for you? Plain sparkling water is not bad for most people. It hydrates effectively, does not leach calcium from bones, and has a negligible effect on tooth enamel compared to other acidic drinks. Some people experience temporary bloating from the carbonation.
Is it OK to drink sparkling water every day? Yes — for most people, drinking plain sparkling water daily is safe and a valid way to meet daily fluid needs. Those with sensitive digestion may prefer to limit it during the luteal phase when bloating is already higher.
Does sparkling water count toward the 8 glasses a day? Yes — and women actually need closer to 9 cups (74oz) from drinks daily, not 8. Sparkling water counts the same as still water toward that target.
Can you put sparkling water in a stainless steel bottle? Yes — sparkling water is safe to store in 18/8 food-grade stainless steel. The mild acidity of carbonated water does not react with food-grade steel under normal use.
Does flavoured sparkling water count as water? Flavoured sparkling water still contributes to hydration, but some varieties contain citric acid, sweeteners, or sugar that make them less ideal than plain water. Plain sparkling water is always the better choice for hydration.
Whether it's sparkling or still — keep it cold all day
The BriteLune 40oz tumbler handles both. Leakproof lid for carbonated drinks, 30-hour cold retention, and wide-mouth opening for ice. One tumbler for every drink in your day.
Shop the BriteLune 40oz Tumbler →
