… that have been left in the sun have been directly linked to breast cancer in women and studies now show links to other types of cancer in both men and women.
When choosing your bottled water, always look for water that has gone through distillation, reverse osmosis, or is filtered with an absolute 1-micron filter.
As an added precaution, you could check for reliable manufacturers of bottled water who are more likely to follow best practices. While the FDA and the Environmental Protection Agency (EPA) do not actually certify bottled water, you can check for certification from the International Bottled Water Association (IBWA) or NSF International. Both of these organizations keep a routine check on the quality of bottled water.