In the Sierra we're blessed with some great spring water, many people drink it straight from the source. Last year I found an artesian spring, the water literally boiling straight up from the ground. We had an especially heavy snow fall last year and I suspect the heavy melt off was causing the turbulent action in the spring. I've drank out of springs hundreds of times in my life, never been ill. I've even consumed a fair amount of river water on occasion while divng for placer gold, yuck, spit, gag. I consider myself fortunate for never getting giardia, or beaver fever as we've always called it. I've had a couple of friends get it, one from swimming, well it actually sounded like he made a day spa in a warm cove of a lake late in the season, lol. I think the other was from drinking stream water. I definitely wouldn't be drinking from the mud puddle in that video. I can't stand most city water, and can see the demand for good tasting water being pretty high in urban markets. But raw water, gawd I hope its fake, sounds like lawsuit waiting happen.
On another note, I had some friends that had their hot spring water tested for bottling, apparently granite has trace amounts of radon in it, just slightly radioactive but still too high for domestic use.