Gerolsteiner Sprudel Germany http://www.gerolsteiner.com/ Little gas Sprudel No gas Stille Quelle Total Dissolved Solids (TDS) 2527 mg/l Calcium (Ca++) 347 mg/l Magnesium (Mg++) 108 mg/l Sodium (Na+) 119 mg/l Potassium (K+) 10.8 mg/l Bicarbonate (HCO3-) 1817 mg/l Chloride (Cl-) 39.7 mg/l Sulphate (SO4--) 36.3 mg/l Fluoride (F-) 0.21 mg/l Nitrate (NO3-) 5.1 mg/l Silica (SiO2) 40.2 mg/l Manganese (Mn+) 0.4 mg/l Strontium (Sr++) 2.9 mg/l Ammonium (NH4+) 0.11 mg/l Note: These data have been collected with care, however, it is possible the values are not entirely correct.