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.
In most cases, no. Plain, unsweetened sparkling water is only mildly acidic and is classified as minimally erosive, which means it carries a low risk to tooth enamel in normal amounts. The real concern is flavored sparkling water made with citric acid, since those varieties are considerably more acidic and can wear down enamel over time if you drink them throughout the day. Rinsing with plain water afterward and drinking with meals instead of sipping constantly will protect your enamel either way.
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 American Dental Association has looked at this question, and its guidance is reassuring. It describes plain sparkling water as minimally erosive, which puts it in a very different category from soda and sports drinks, both of which it considers extremely erosive. In plain terms, unflavored sparkling water behaves a lot like regular water when it comes to your enamel. You can read the ADA’s full explanation in The Truth About Sparkling Water and Your Teeth on its MouthHealthy site.
The ADA’s advice also comes with a reminder we agree with. Plain water, especially fluoridated tap water, is still the best everyday drink for your teeth. Sparkling water is a good swap for soda, not a replacement for water.
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.
Plain sparkling water is unlikely to damage your teeth when you drink it in normal amounts. The carbonation makes it slightly more acidic than still water, but it stays well below the acidity of soda or juice. Flavored versions with citric acid are a different story, especially if you sip them all day.
Plain seltzer is just water with carbonation added, so it follows the same rule as other plain sparkling water: low risk. Club soda has added minerals and behaves much the same way. Tonic water is the one to watch, because most tonic contains sugar, which feeds the bacteria that cause cavities.
Plain sparkling water has no sugar, so it doesn't feed cavity causing bacteria the way soda does. Cavities become a concern when sugar or frequent acid exposure is involved. One small thing to keep in mind is that bottled sparkling water usually has no fluoride, so if it fully replaces tap water you may be missing some of that protection. Ask us about a fluoride treatment if that applies to you.
For most people, yes. If you have sensitive teeth, a history of enamel wear, or dry mouth, it's worth keeping flavored varieties to mealtimes and finishing with a glass of plain water.
Yes, by a wide margin. Switching from soda to plain sparkling water cuts out both the sugar and most of the acid, which is one of the most helpful changes you can make for your enamel.
Carbonation alone isn’t the main problem. It adds a small amount of acid, but plain sparkling water stays far below the acidity of soda or juice. What tends to cause trouble is what gets added to the water, like sugar, citrus, or flavor acids, and how often you sip it through the day.
Yes, you can. Just don’t swish or rinse with lots of water right after brushing, since that washes away the fluoride from your toothpaste. If you’ve just finished a sparkling water or another acidic drink, wait about 30 minutes before you brush so your enamel has time to settle.
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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