Bottled water brands produced by Whole Foods and Dr. Pepper have been found to have hazardous levels of arsenic, according to a disturbing new investigation.

Consumer Reports has released the results of the investigation into arsenic levels in popular brands of bottled water and the report found that 11 brands out of 130 had detectable amounts of arsenic in them, making them potentially hazardous to drink over the long run.

Current federal regulations say that bottled waters must have arsenic levels no higher than 10 parts per billion. However, Consumer Reports says several experts think that arsenic levels in bottled water greater than 3 parts per billion constitute a health risk.

FastCompany reports: In the test, four brands had detectable levels of arsenic (below 3 ppb), while six brands had arsenic levels of 3 ppb or higher.

Those six brands include Starkey (owned by Whole Foods), Peñafiel (owned by Keurig…