Distilled and demineralized water

In the majority of cases, the source of the water (connection to the unit) comes directly from the city (municipality), and the water is distilled only once

Contains organic impurities and biological compounds (bacteria and viruses) when water is not decontaminated by UV radiation

Some bottled waters may contain other substances added by the manufacturer to remove the metallic taste often found in distilled water

An unbalanced acid pH - more acidic (can be dangerous to health in the long term)