Healthy beverage guidelines: always read labels...even on water?

Is this "healthy"?

We're told to drink lots of water on a daily basis.  Had no idea that Dasani water is "enhanced" until my niece that lost over 70 lbs on Weight Watchers showed me the label.  So thankful she did because now I even read the labels on water.

Healthy Beverage Guidelines by Harvard School of Public Health