CarbonNeutral product. Total dissolved solids (TDS) 62 ppm. Naturally occurring pH 8.4. Bottled at the source: Olfus Spring, Iceland. NSF independent certified. For a report on water quality and information, call. 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 Natural Spring Water - the source of an epic life. IcelandicGlacial.com. From Iceland.