The legendary Ölfus Spring is a vast underground renewable resource formed over 5000 years ago. It sits in the middle of a 128,000- acre exclusion zone protecting the spring and its surrounding area. It is shielded by an impenetrable barrier of lava rock resulting in a naturally occurring low mineral content (TDS) of 62ppm. It is continually replenished by rain, snow and ice melt coming from the mountains in the north. Water travels directly from the underground spring into the bottling facility under a positive air pressure to impede the outside air. The first time Icelandic Glacial encounters the open air is when the bottle seal is broken. Dairy free, Gluten free, Organic, Wheat free, Fair trade.