Icelandic Glacial is one of the world's best filtered water brands that comes out of Iceland. The source water for Icelandic Glacial is the beautiful Olfus Spring. This spring was formed over 5,000 years ago. The water is naturally filtered through layers of volcanic rock and is constantly replenished by rain, snow, and ice melt. Iceland is one of the last places on earth that remains environmentally pure and unaffected by pollution. With one of the lowest TDS (total dissolved solids) levels in the bottled water industry, Icelandic Glacial is relatively free of the minerals that affect the taste and character of water. In addition, Icelandic Glacial has an uncommonly high alkaline pH level of 8.4, which is one of the best in the industry. This water is bottled in the factory at Hlidarendi, Iceland at the Olfus Spring and is never exposed to open air.