
This label, from one of the brands cited in the EWG scorecard as most informational, reveals why other labels may not be as forthcoming.
Ironically, points out Sean Gray, senior analyst with the Environmental Working Group, consumers of tap water are given far more detailed information about that water than is provided by any bottled water producer.
You can read the EWG's Bottled Water Scorecard here, and see the section that specifically addresses compliance with California's labeling requirements here.