Not all bottled water is equal—here's what Germans should check before drinking

Mineral water remains a popular drink in Germany, with sales hitting 10.2 billion litres in 2025—a 2.4% rise from the previous year. Yet not all bottled waters are equal, as some contain added sugars, sweeteners, or high sodium levels. Experts also highlight differences in mineral content compared to tap water, raising questions about which option is truly healthier.

German consumers have over 500 regional mineral water brands to choose from, produced by around 150 companies. Still mineral water saw the biggest growth last year, increasing by 6.1%. However, while mineral water is often perceived as purer and richer in minerals like calcium and magnesium, tap water varies by region and typically contains fewer minerals overall.

Calcium in mineral water supports bone health and muscle function, while magnesium helps control blood sugar and blood pressure. But some brands add sugar, artificial sweeteners, or colouring—especially in flavoured or sparkling varieties. Tonic water, for example, can contain as much sugar as a standard soda. Even some fruit-flavoured sparkling waters include sweeteners, making label-checking essential.

For those watching their salt intake, the sodium in certain mineral waters may be a concern. Sparkling water, whether natural or artificially carbonated, doesn't hydrate better than tap water, though many prefer its fizz. Club soda, or seltzer, is simply tap water with added carbon dioxide and no sugar, making it a safer alternative. Meanwhile, studies link regular consumption of artificially sweetened drinks to metabolic syndrome, type 2 diabetes, and even cancer.

Mineral water sales continue to climb, but not all options offer the same benefits. Tap water remains a low-cost, low-sodium alternative, while plain sparkling water without additives provides a sugar-free fizz. Consumers are advised to check labels carefully, particularly for hidden sugars or sweeteners in flavoured varieties.