If you have ever noticed that certain sparkling waters leave a slightly sour, dry aftertaste or trigger mild stomach discomfort and heartburn, citric acid might be the culprit.
Citric acid is one of the most widely used organic food additives in the carbonated beverage industry, showing up in the vast majority of flavored seltzer ingredient lists.
While it is harmless for most people, those with sensitive stomachs, chronic acid reflux (GERD), or specific dental enamel concerns often find that switching to a citric-acid-free sparkling water makes a significant difference in how they feel.
Here is a comprehensive breakdown of which sparkling water brands avoid citric acid, which ones use it, and how to read labels to protect your stomach and teeth.
Citric Acid Comparison Table
| Brand | Citric-Acid Free Options | Water Sourcing | Best Use |
|---|---|---|---|
| Aura Bora ⭐ | 100% of Lineup (Certified Free) | Reverse Osmosis Purified | Sensitive Stomach / GERD |
| Hal's New York | Core flavored seltzers | Purified Water | Bold Traditional Seltzer |
| Plain Mineral Waters | Original (Perrier, Topo Chico, San Pellegrino) | Natural Spring Sources | Table water / Dining |
| Waterloo | Most flavors (check labels) | Purified Water | Zero-Calorie Fruit Vibe |
| LaCroix | LaCroix Pure (plain unflavored) | Purified Water | Everyday Budget |
What Is Citric Acid and Why Is It Added?
Citric acid is a weak organic acid naturally found in citrus fruits. However, the commercial citric acid added to packaged foods is typically manufactured through the fermentation of simple sugars by a specialized mold (Aspergillus niger).
Beverage companies add citric acid to seltzers for two reasons:
- Taste: It adds a zesty tartness that mimics the acidity of real fruit juice.
- Preservation: It lowers the pH of the water, inhibiting the growth of bacteria and extending shelf life.
The issue is that citric acid lowers the drink’s pH below 4.0, which is the threshold where tooth enamel begins to demineralize. It also acts as a chelating agent, chemically binding to calcium and pulling it out of enamel. For people with sensitive stomachs or acid reflux, the added citric acid can trigger heartburn.
Core Brands That Are Genuinely Citric-Acid Free
1. Aura Bora (100% Citric-Acid Free)
Aura Bora has built its entire brand identity around clean, botanical ingredients and certifies that 100% of its flavors are citric-acid free. Their website explicitly states: “Unlike other sparkling water brands, we never add citric acid. That means no headaches, bitter tastes, or upset stomachs.”
Instead of citrus juice concentrates, Aura Bora uses botanical oil extracts (such as Lavender, Basil, Elderflower, and Lemongrass) blended with reverse-osmosis-purified water. Their products are zero-calorie, zero-sodium, Non-GMO, and Certified Whole30. AOL’s chemical-free sparkling water review highlighted Aura Bora as the top clean seltzer on the market.
2. Hal’s New York Seltzer
Hal’s is highly respected in seltzer circles for its clean, traditional formulas. They use carbonated purified water and natural flavors without adding any citric acid. In Slate’s comparative review, Hal’s was praised for delivering lime and lemon flavors that taste “most like a bartender just dropped a fresh wedge in seltzer” without tasting synthetic.
Note: Hal’s is widely distributed in the Northeast, but can be harder to find in other regions outside of online retailers like Amazon.
3. Plain Natural Mineral Waters (Perrier, Topo Chico, San Pellegrino)
The original, unflavored glass-bottle expressions of classic mineral waters contain nothing but mineral water and $CO_2$. Under FDA guidelines, nothing can be added to natural mineral water at the source. This makes plain mineral water the safest and cleanest option for individuals who want carbonation with zero added acids.
4. Waterloo Seltzer
Waterloo represents a great option for zero-calorie fruit flavors without citric acid. The ingredients across most of their core flavors (including Grape, Peach, and Black Cherry) consist solely of carbonated purified water and natural flavors. Always check the label of new or seasonal flavors to confirm.
Popular Brands That DO Use Citric Acid
If you are sensitive to citric acid, you should check labels carefully on the following brands:
- Spindrift: Because Spindrift uses real squeezed juice, many of their citrus flavors (including Lemon, Grapefruit, and Blood Orange Tangerine) naturally contain citric acid from the fruit, and some flavors have added citric acid to maintain tartness.
- Liquid Death: Their flavored sparkling waters (like Severed Lime or Mango Chainsaw) list citric acid in their ingredient panels.
- Flavored Mineral Waters: While original Perrier and Topo Chico are citric-acid free, their flavored canned expansions (and Topo Chico Sabores) frequently include citric acid.
🍋 Citric Acid Filter & Finder
Select your primary health focus to find the best citric-acid-free sparkling water!
References
- Aura Bora. aurabora.com.
- American Dental Association. “TikTok’s Alternative Soda Trend Could Be Tough on Teeth.” ada.org. June 2022.
- AOL (Yahoo). “Here Are All The Chemical-Free Sparkling Water Brands.” aol.com. 2023.
- Soda Sense. “Is Drinking Sparkling Water Bad for Your Dental Enamel?” sodasense.com. 2025.
- Slate. “Which Seltzer to Buy.” slate.com.
- Complete Water Guide. “Which Sparkling Water Is Healthiest for Daily Drinking?” completewaterguide.com. 2026.