pH 8.4. Natural spring water from Iceland. Natural occurring pH 8.4 at the source. Over 5,000 years ago, long before the first humans reached remote Iceland, a massive volcanic eruption created a unique underground spring, complete with its own natural filtration system- pristine lava rock. Now known as the Olfus Spring, this is the origin of Icelandic Glacial - the natural spring water which is the source of an epic life. NSF Certified. icelandicglacial.com. For a report on water quality and information, call toll free number: +1-(888)-802-2088. icelandicglacial.com. BPA free. CarbonNeutral product. Bottled at the Source: Olfus Spring, Iceland.