Is sparkling water bad for your teeth? What you need to know
17 September 2026 | 12:59
Quick answer: plain sparkling water is only mildly acidic and is much kinder to your teeth than fizzy drinks or fruit juice. The bigger risks are flavoured sparkling waters and sipping throughout the day.
As part of educating our patients here at Euston Place Dental Practice in Leamington Spa, we place great focus on everyday habits that can affect your oral health, one of those is the rise and popularity of sparkling water as a substitute for sweetened drinks.
Sparkling water has become a popular alternative to sugary fizzy drinks and juices, but many people wonder if it’s actually bad for their teeth and gums. So, is sparkling water bad for your teeth? Let’s look at the facts and separate myth from reality.
Understanding carbonic acid
When carbon dioxide is dissolved in water, it forms carbonic acid, a weak acid. While this might sound concerning, the impact of carbonic acid on your teeth is relatively minor compared to stronger acids found in other beverages.
Comparing acidity levels
Plain sparkling water is mildly acidic, but it is less acidic than many fizzy drinks and fruit juices. This lower acidity means it’s less likely to erode tooth enamel significantly.
Enamel erosion: the real story
Enamel erosion occurs when acids wear away the protective outer layer of your teeth. While carbonic acid can contribute to this process, its effect is minimal. The real culprits of enamel erosion are stronger acids like citric and phosphoric acid, often found in flavoured sparkling waters and sugary drinks.
A University of Birmingham study tested flavoured sparkling waters sold in the UK. All of them were acidic enough to cause erosion-type changes to enamel in the lab, and the researchers advised treating them as acidic drinks rather than as water.
Moderation is key
Drinking sparkling water in moderation is unlikely to cause significant harm to your teeth. However, frequent consumption of any acidic beverage can increase the risk of enamel erosion over time, because sipping all day doesn’t give your saliva time to repair softened enamel. To minimise potential risks, enjoy sparkling water in moderation, ideally with meals, and follow good oral hygiene practices.
Signs your enamel may be wearing
Enamel erosion is usually slow and painless at first, so it’s easy to miss. Look out for:
- Sensitivity to hot, cold or sweet food and drinks
- Teeth looking more yellow, as the layer underneath shows through
- Biting edges that look thin, translucent or slightly chipped
If you notice any of these, mention them at your next check-up. If sensitivity comes on suddenly or is severe, contact us about emergency dental care.
Our tips for protecting your teeth:
- Rinse with water: After drinking sparkling water, rinse your mouth with plain water to help neutralise any acids.
- Maintain oral hygiene: Brush your teeth twice a day with fluoride toothpaste and floss regularly.
- Limit acidic beverages: Try to limit your intake of all acidic drinks, not just sparkling water.
- Wait before brushing: Brushing straight after an acidic drink can wear away softened enamel. The Oral Health Foundation recommends waiting at least an hour.
Plain sparkling water can be a refreshing and relatively safe choice for your teeth and gums, especially when compared to sugary or highly acidic beverages. By enjoying it in moderation and maintaining good oral hygiene, you can keep your smile healthy and bright.
Frequently asked questions
Is it bad to drink sparkling water every day?
For most people, a glass or two of plain sparkling water a day is fine, especially with meals. The habits to avoid are sipping it slowly all day and choosing flavoured versions.
Is sparkling water better for your teeth than diet cola?
Yes. Diet fizzy drinks are sugar-free but still acidic and can cause erosion. Plain sparkling water is much less acidic.
Are sparkling mineral waters bad for your teeth?
Plain sparkling mineral waters follow the same advice as any plain sparkling water: low risk, best enjoyed with meals. Check the label for added flavourings or fruit acids.
Can I drink sparkling water after brushing my teeth at night?
It’s best to stick to still water after your bedtime brush. Saliva flow drops while you sleep, so any acid stays on your teeth for longer.
If you are unsure about how your diet or habits might be affecting your teeth and gums, book a dental check-up today by calling 01926 422509 or by emailing reception@eustonplace.com. The dental team at Euston Place in Leamington Spa is ready to assist you with any questions and schedule any appointment you may require.
You can see our fees before you book, and if visiting the dentist makes you nervous, read how we support patients with dental anxiety.