March 21, 2025

Is Sparkling Water Bad for Your Teeth? Dentists Weigh In

Sparkling water has surged in popularity over the past decade, often seen as a refreshing, calorie-free alternative to soda. But while it’s a healthier choice in terms of sugar and calorie content, some people worry that its carbonation could harm their teeth. The concern stems from its acidity, which may weaken enamel and lead to dental problems. So, is sparkling water really bad for your teeth? Let’s take a closer look at what dentists have to say.

Understanding Acidity and Carbonation
The primary reason people worry about sparkling water’s impact on dental health is its acidity. When carbon dioxide (CO2) is dissolved in water, it creates carbonic acid, which gives sparkling water its signature fizz. This process lowers the pH of the water, making it more acidic than still water. Enamel, the protective outer layer of teeth, is highly resistant but can erode when exposed to acidic substances over time.

However, the level of acidity in sparkling water is much lower than in sodas or fruit juices. Most sparkling waters have a pH between 3 and 4, whereas soda can have a pH as low as 2.5. For comparison, lemon juice has a pH of around 2, and coffee is around 5. While sparkling water is more acidic than tap water, it’s significantly less erosive than sugary soft drinks or citrus juices.

What Do Dentists Say?
Dentists agree that while sparkling water is slightly more acidic than regular water, it is generally safe for your teeth—especially when compared to sugary or highly acidic drinks. Here’s what they have to say:

Enamel Erosion Is Minimal
Studies show that the potential for enamel erosion from plain sparkling water is quite low. According to the American Dental Association (ADA), drinking sparkling water does not pose a significant threat to tooth enamel, especially when compared to beverages like soda or sports drinks. The key factor is the absence of sugar, which fuels harmful bacteria and leads to cavities.

Flavored Sparkling Water Can Be Riskier
While unflavored sparkling water is relatively harmless, flavored varieties can be more acidic. Many flavored sparkling waters contain citric acid or other fruit acids to enhance taste, which can lower the pH further and increase the risk of enamel erosion. Some flavored options also contain added sweeteners, which can contribute to tooth decay.

Frequency of Consumption Matters
Dentists emphasize that how often you drink sparkling water matters more than whether you drink it at all. Frequent sipping throughout the day can expose teeth to prolonged acidity, increasing the risk of enamel weakening over time. Drinking it with meals or in one sitting is better than sipping it constantly.
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Best Practices for Protecting Your Teeth
If you enjoy sparkling water but want to minimize any potential dental risks, here are some tips recommended by dentists:

Drink in moderation: Enjoy sparkling water in reasonable amounts rather than throughout the day.

Use a straw: This helps direct the liquid away from teeth, reducing direct exposure to acidity.

Rinse with water: After drinking sparkling water, rinse your mouth with plain water to help neutralize acidity.

Avoid brushing immediately: If you’ve consumed acidic beverages, wait at least 30 minutes before brushing to prevent damaging softened enamel.

Opt for unflavored varieties: Choose plain sparkling water over flavored versions to reduce acid exposure.

The Verdict: Is Sparkling Water Bad for Your Teeth?
In short, no—plain sparkling water is not significantly harmful to your teeth. While it is slightly more acidic than still water, it does not contain sugar, making it far less damaging than soda or juice. However, flavored sparkling waters can pose a greater risk due to added acids and sweeteners.

Dentists generally agree that enjoying sparkling water in moderation, alongside good oral hygiene practices, poses little to no risk to dental health. So, if you love the fizz, you can keep enjoying your favorite sparkling water—just be mindful of how often and what kind you drink.