6. Icelandic Glacial
The water is sourced at Iceland’s 4,500-year-old Ölfus Spring and shielded by an impenetrable barrier of lava rock; the Spring is constantly replenished by rain, snow, and ice-melt from the nearby mountains. It travels directly from the underground spring into the bottling facility, which maintains a positive air pressure to impede the outside air.
Pixabay/Public domain
