Consider this - a study done at the University of Calagary in Alberta, Canada, and published in the Canadian Joural of Public Health, showed alarmingly high levels of bacteria in water bottles that were reused without being cleaned.
Researchers collected 76 bottles from elementary school students and analyzed the leftover water. The amount of bacteria exceeded safety standards in more than 13 percent of the bottles.
And there's this less than refreshing bit of information - PET (polyethylene terephthalate) is a plastic often used to make drinking water bottles. The United States Food and Drug Administration has approved these containers for one-time use only.
At the University of Idaho a study was conducted which subjected bottles made from PET to heat, ultraviolet light, and manual pressure meant to replicate the way you squeeze the plastic when you drink. Over a period of a few days to a few weeks - unhealthy compounds, including some that are carcinogenic, leached into the water from water from the plastic, the study showed.
