Sparkling water has become one of the most popular beverages in the country, and brands like Spindrift, LaCroix, and Bubly have replaced soda for millions of people looking for a healthier alternative. But patients frequently ask whether the carbonation in sparkling water is damaging their enamel — and the answer is more nuanced than a simple yes or no.
Here is what the current research says, what Dr. Killingsworth recommends to patients at our Parker, CO office, and what you should actually be watching out for.
When carbon dioxide is dissolved in water to create carbonation, it produces carbonic acid. This makes sparkling water slightly more acidic than plain still water, which has a neutral pH of 7. Most plain, unflavored sparkling waters have a pH of around 5 to 5.5.
Tooth enamel begins to weaken when oral pH drops below approximately 5.5, so plain sparkling water sits right at the edge of that threshold. In practice, for most healthy adults drinking sparkling water in reasonable amounts, the risk of enamel erosion from plain carbonation alone is low.
Research presented at the NUTRITION 2026 conference by the American Society for Nutrition confirmed this, finding that unsweetened sparkling water caused only a brief, minor increase in mouth acidity that did not reach the threshold typically associated with enamel erosion. The researchers also noted that switching from sugar-sweetened sodas to unsweetened sparkling water could actually help reduce the risk of enamel erosion overall.
Plain sparkling water is not your enemy. What you add to it might be.
The concern shifts significantly when sparkling water is flavored. Citrus-flavored varieties — lemon, lime, grapefruit — often contain citric acid as a flavoring agent, which is considerably more acidic than carbonic acid alone. Some flavored sparkling waters have a pH as low as 3, putting them closer to orange juice than to plain water in terms of erosive potential.
Spindrift, which uses real squeezed fruit juice rather than artificial flavoring, tends to be more acidic than plain sparkling waters because of the natural citric acid content in the juice. The raspberry lime and lemon varieties in particular have a lower pH than unflavored options. If Spindrift is your daily go-to and you are sipping it throughout the day, that repeated acid exposure is worth paying attention to.
This does not mean you need to give it up entirely. It means being thoughtful about how you drink it.
A few practical habits make a meaningful difference:
Drink it with meals rather than sipping throughout the day. Constant sipping keeps your mouth in an acidic state for extended periods. Drinking sparkling water alongside food reduces the time your enamel is exposed to acid and allows your saliva to neutralize pH between sips.
Follow it with plain water. Rinsing your mouth with still water after finishing a sparkling water helps wash away residual acid and brings your oral pH back toward neutral quickly.
Do not brush immediately after. Acid temporarily softens enamel. Brushing right after drinking something acidic can cause more damage than the drink itself. Wait at least 30 minutes before brushing.
Use a straw for flavored varieties. Drinking through a straw reduces direct contact between acidic liquid and your tooth enamel, particularly on the front teeth.
Choose plain over flavored when possible. If you drink sparkling water regularly throughout the day, unflavored options are significantly gentler on your enamel than citrus-flavored varieties.
To put it in perspective, plain sparkling water is far less damaging than most common beverages. Soda typically has a pH of 2.5 to 3.5. Sports drinks, orange juice, and coffee all fall below the 5.5 enamel erosion threshold. Plain sparkling water, at pH 5 to 5.5, sits at the mild end of the risk scale.
Replacing a daily soda habit with plain sparkling water is genuinely better for your teeth. The key is not treating all sparkling water as equally safe, and being aware that heavily flavored or juice-based varieties carry more risk than plain.
Enamel erosion is a gradual process and often goes unnoticed until it has progressed. Signs to watch for include:
Increased sensitivity to cold, hot, or sweet foods and drinks.
Teeth that look more transparent or yellowed at the edges as enamel thins and the underlying dentin becomes visible.
Small dips or grooves on the surface of teeth.
Chips or cracks that seem to appear without a clear cause.
If you are noticing any of these changes, mention them at your next visit. Dr. Killingsworth can assess whether acid erosion is a factor and recommend steps to protect your enamel going forward.
Plain, unsweetened sparkling water is a reasonable choice for most people and a significant improvement over soda, juice, or sports drinks. Flavored sparkling waters, particularly those with citrus juice or citric acid, carry more risk when consumed frequently throughout the day. Being mindful of how and when you drink them goes a long way toward protecting your enamel.
If you have questions about how your diet is affecting your teeth, it is worth bringing up at your next cleaning and exam. Small adjustments can make a real difference in your long-term dental health.
Killingsworth Family Dentistry serves patients throughout Parker, CO and nearby communities including Bradbury Ranch, Stroh Ranch, The Pinery, Stonegate, Castle Rock, and Lone Tree. New patients are always welcome.
Book your appointment online or call our office at (303) 841-2070
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