Gerolsteiner vs Topo Chico

Gerolsteiner carries roughly 9.5× the magnesium of Topo Chico (104 vs 11 mg/L). Overall minerality isn't close: 2,500 mg/L TDS for Gerolsteiner against 640 for Topo Chico — different categories of water, not just different brands. At the register, Gerolsteiner is about 21% cheaper per liter ($3.33/L vs $4.23/L).

MeasureGerolsteinerTopo Chico
TDS (mg/L)2,500640
pH6Not disclosed
Calcium (mg/L)346120
Magnesium (mg/L)10411
Sodium (mg/L)11641
Potassium (mg/L)113.6
Bicarbonate (mg/L)1,808155
Sulfate (mg/L)38180
Chloride (mg/L)4063
Silica (mg/L)Not disclosedNot disclosed
Price per liter$3.33/L$4.23/L

Bold marks the higher value — higher is a fact, not a verdict; the right water depends on what you want it for. Values are label- or report-derived and approximate.

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