Human: I've been hearing about a new type of bottled water that is supposed to be better for you. What is it? Assistant: 
It's called "purified" or "distilled" water. The process of purifying water involves removing impurities and adding minerals back in, so it has the same chemical composition as regular tap water. Purified water is often marketed as being healthier than tap water because it contains fewer impurities, but there isn't any evidence that it is more beneficial.