Water With the Most Minerals: Highest Mineral Content Bottled Waters Compared

Mineral content is the sum of naturally dissolved substances the water picked up while flowing through rock — mainly calcium, magnesium, sodium, potassium, bicarbonate, sulfate and chloride. It is fixed by geology at the source and, for a genuine natural mineral water, cannot legally be altered after bottling.

TDS stands for Total Dissolved Solids and is measured in milligrams per litre (mg/L). It's the standard shorthand for how mineralized a water is. Purified waters sit under 50 mg/L, mid-range spring waters around 200–500 mg/L, and high-mineral waters can exceed 1,500 mg/L.

European labelling convention calls a water "mineral-rich" above 1,500 mg/L TDS. Between 500 and 1,500 mg/L is medium-mineral; under 500 mg/L is low-mineral; and under 50 mg/L is very low-mineral (oligomineral).

For calcium, Gerolsteiner (348 mg/L), Vittel (240 mg/L), Contrex (~468 mg/L) and Hépar (~549 mg/L) top the mainstream chart. Everyday premium waters like Evian (80 mg/L) and Fiji (18 mg/L) are far lower.

Magnesium leaders include Hépar (~119 mg/L), Gerolsteiner (108 mg/L), Aqua Carpatica (~76 mg/L) and Rogaška Donat Mg, which is uniquely rich at ~1,000 mg/L. See our dedicated highest-magnesium water guide for the full list.

Bicarbonate buffers acidity and softens taste. Rogaška Donat Mg (~7,500 mg/L), Vichy Catalan (~2,100 mg/L), Gerolsteiner (~1,816 mg/L) and Borjomi (~1,300 mg/L) are the standouts.

Taste-wise, Gerolsteiner and San Pellegrino balance mineral intensity with drinkable carbonation. Vittel and Contrex are the most approachable still options. Very high-TDS waters like Donat Mg and Vichy Catalan taste distinctly salty-mineral and are better sipped than gulped.

For everyday use, Gerolsteiner (sparkling) and Vittel (still) are the usual picks — strong mineral profile without an overwhelming taste. San Pellegrino is the best mid-mineral sparkling option with food.

High-mineral waters supply meaningful calcium, magnesium and bicarbonate per litre and have pronounced taste. Low-mineral waters like Fiji, Volvic or Icelandic are lighter, better for coffee and tea preparation, and preferred by drinkers who want a neutral profile.

For healthy adults, no — but people on sodium-restricted diets or with kidney disease should track sodium intake from bottled water. High-TDS waters are also not recommended for preparing infant formula. Always read the label if you're managing a medical condition.