This begins as volcanic magma (molten rock), trapped within the geologic strata. The magma superheats the ground water beneath the Perrier spring, permeating the calcium carbonate layers and forming carbonated gas. The carbonated gas rises to mingle and carbonate the mineral water.

How is Perrier water made?

The spring from which Perrier water is sourced is naturally carbonated, but the water and natural carbon dioxide gas are captured independently. The water is then purified, and during bottling, the carbon dioxide gas is re-added so that the level of carbonation in bottled Perrier matches that of the Vergèze spring.

Why is Perrier water bad for you?

Since sparkling water contains CO2 gas, the bubbles in this fizzy drink can cause burping, bloating and other gas symptoms. Some sparkling water brands may also contain artificial sweeteners like sucralose, warns Dr. Ghouri, which may cause diarrhea and even alter your gut microbiome.