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Table 1 Composition of the three waters used in the intervention study. (1)Valvert®; (2)Distilled water+MgSO4; (3)Contrex®.

From: Mineral water intake reduces blood pressure among subjects with low urinary magnesium and calcium levels

Waters Minerals/mg L A1 B2 C3
Calcium (Ca2+) 67.6 4 486
Magnesium (Mg2+) 2 82.3 84
Sodium (Na+) 1.9 2.4 9.1
Potassium (K+) 0.2 0.1 3.2
Sulphate (SO4 2-) 18 326 1187
Bicarbonate (HCO3 -) 204 12 403
Chloride (Cl-) 4 0.7 8.6
Fluoride (F-)0 <0.05 0 0.32
Silica (SiO2) 5.7 0 8