For more information see: “ Bottled Water and Your Health” Polaris Institute. http://www.insidethebottle.org/files/health%20impacts%20fact%20sheet.pdf “ Murky Waters: The Urgent Need for Health and Environmental Regulations of the Bottled Water Industry” Polaris Institute. http://www.insidethebottle.org/murky-waters-urgent-need-health-and-environmental-regulations-bottled-water-industry
(This is the most recent major report on bottled water safety.) While noting that most bottled water is safe, water…the organization found that at least one sample in a third of the brands. The Environmental Working Group tested 11 brands and found chemical contamination in all bottled waters tested, w/quality varying significantly. Some bottled waters exposing customers to unexpectedly high pollution loads including: trihalomethanes (THMs include chloroform, bromoform, bromodichloromethane, chlorodibromomethane) were detected in four brands, including Sam’s Choice and Acadia, at 2-3x the bottled water industry standard of 10ppb EPA regulates drinking water and FDA regulates bottled water, but oversight doesn’t apply to water packaged & sold w/in same state, including contents of water cooler jugs. Water bottles are often made of PET (polyethelene terphtalate) which is an endocrine disrupter and may leech into the water when the bottle is exposed to heat, sunlight, or long-term storage. Other bottles are made of polycarbonate (water cooler jugs, sport water bottles, some hard water bottles such as Nalgene-style bottles) which contains bisphenol A (BPA) and according to a National Institute of Health study can cause neurological and behavioral disorders in fetuses and children, and affects brain function, the reproductive system and the immune system in adults.
The water may come from "one of the last pristine ecosystems on Earth," as some of the labels say, but out back of the bottling plant is a less pristine ecosystem veiled with a diesel haze. Each water bottler has its own version of this oxymoron: that something as pure and clean as water leaves a contrail. Treating and filtering tap water for bottling creates even more waste. By some estimates, it takes about two liters of water to make every liter you see on store shelves. Coke & Pepsi put their tap water through an energy-intensive reverse osmosis process that is more potent than that used to turn seawater into drinking water. American’s went through about 50 billion plastic water bottles last year, 167 for each person – bottles designed just to be discarded. (Water weighs 8 1/3 pounds a gallon. It's so heavy you can't fill an 18-wheeler with bottled water -- you have to leave empty space.)