From the
Advance Chemicals website, they make the stuff:
Pristine works by activating chlorine dioxide, which releases oxygen in a highly active form into the water. When the oxygen is released it kills viruses, bacteria, and protozoa, such as giardia and cryptosporidium.
Water treated with chlorine and iodine is known to be harmful to our health, while often creating foul tastes and odours. Pristine's unique process can actually improve the taste of drinking water. Although using a water filter might seem like a quick fix for purifying water, water filters do not remove all bacteria and viruses. Even the most expensive water filter cannot accomplish what Pristine will do in a short period of time.
The FAQ page is
here. I have more detailed info on this somewhere at work, I had to provide backup to a client that needed to placate the health inspector.
And it really does make water taste better. And no, I'm not on their payroll, I just think it is a great product.