Primary water is 'deep Earth generated' water or magmatic water formed by naturally occurring molecular hydrogen gases combining with oxygen, deep within the Earth’s mantle to form brand new water molecules. Primary water has never ben used or seen the light of day. It's very different to ground, atmospheric, surface, aquifer or highly recycled waste water because primary water is free from exposure to humans or man-made toxins and environmental pollutants. Go to primarywaterinstitute.org for more about primary water.