You've never heard of it, because the marketing department of H2Om water has just made it up. Welcome to the painful world of pseudo-science, or "bollocks" if you prefer.
You see, H2Om is not normal spring water. (Actually, that's exactly what it is. But let's not let facts get in the way at this early stage.) It has "vibration energy" in it. Yes, in it. Have they vibrated the water, I hear you ask. Well, obviously not. Shaking water to get it to vibrate would be far too, erm, logical. No, at H2Om they have better ways.
First of all, they ensure that the bottle labels have the correct vibrational energy. Yes, that's right - the labels. With writing on them and stuff. Special writing, in lots of different languages. And in the correct colour. So it can "vibrate" somehow. And do something. Perhaps.
Then, you have to "think while you drink it". Because most of us completely switch our brains off when drinking water, you know. It's a little known fact that if you drink normal water for more than a minute non-stop, you will pass out because you forget to breathe.
Finally, once they've bottled the water, they play music to it. Sound waves vibrate, you see. Not enough to pass through the plastic bottle and have any effect whatsoever on the contents, of course, but it's the thought that counts. Or rather the lack of thought but the ability to produce marketing blurb based on it. They use "ancient healing scales" to do this. Better that then sticking them near a piano whilst someone practices their grade 3 on it.
Their website says:
we know some people, and politicians, may be skeptical, however we believe that if water is effected by these types of vibrations, then as a bonus, let's provide the water with the purest form of vibration possible"...And politicians". Because they're not people, and we specifically need to point them out! The swine! And forgive me if I'm wrong, but surely the purest form of vibration is, well, to just vibrate the effing water!
Finally, we come to the names of the waters. Yes, despite every bottle containing exactly the same water as the next bottle, they name each bottle depending on the way they've pretended to vibrate it. So you get such exciting things as Gratitude, Joy, Prosperity, Peace and Love. Yes, "Love water" - who'd not want to drink that?
Sounds suspiciously like a load of wank to me.