About
Carbonated water is potable water into which carbon dioxide gas has been dissolved under pressure, producing effervescence. It is widely used as a beverage base, mixer, and standalone drink, and is the primary ingredient in most carbonated soft drinks.
Safety summary
Carbonated water is broadly safe for the general adult population with no established ADI restriction; it is not classified by IARC and carries no major regulatory concern across any jurisdiction. Its mild carbonic acid (pH ~4.2–5.9) may pose a low risk of dental enamel erosion with excessive or prolonged contact with teeth. Some uncertainty exists regarding its effects on blood pressure in hypertensive individuals, as current literature has not reached a definitive consensus.
Regulatory landscape
| Jurisdiction | Status | Note |
|---|---|---|
| FSSAI (Food Safety and Standards Authority of India) (India) | Approved | Carbonated water is standardized under sub-regulation 2.10 of FSS (Food Product Standards and Food Additives) Regulations 2011. Carbonated water (plain soda — potable water impregnated with CO2 under pressure) packed in returnable glass bottles is subject to specific labelling exemptions under FSSAI Packaging and Labelling Regulations 2011. Carbonated and non-carbonated water-based flavoured drinks are separately licensed under FCS 14.1.4.1 & 14.1.4.2.source |
| FDA (Food and Drug Administration) (United States) | Approved | Carbonated water is explicitly listed among low-risk food types in FDA's FSMA Qualitative Risk Assessment framework (21 CFR Part 165). Artificially carbonated waters must disclose the addition of carbonation on labeling per FDA model regulation.source |
Who should approach with care
Research citations
- 1PubMed. Systematic Review of the Effects of Sparkling Water Consumption on Blood Pressure. pubmed.ncbi.nlm.nih.gov
- 2FDA. FDA Regulates the Safety of Bottled Water Beverages Including Flavored Water and Nutrient-Added Water Beverages. fda.gov
- 3PubMed. Effect of carbonated water manufactured by a soda carbonator on etched or sealed enamel. pmc.ncbi.nlm.nih.gov
- 4FDA. Carbonated Soft Drinks: What You Should Know, 2022. fda.gov
- 5FSSAI. Food Safety and Standards (Packaging and Labelling) Regulations, 2011 — Compendium, 2022. fssai.gov.in
- 6PubMed. The effects of carbonated water upon gastric and cardiac activities and fullness in healthy young women, 2013.
