Between a rock and a toxic place. Canadian newspapers report that reused bottled water containers can be breeding grounds for dangerous bacteria, but that the process of cleaning the bottles properly causes the plastics — intended of one time use — to break down and leach toxic chemicals into the water you drink. “The Canadian Bottled Water Association advises against reusing the containers altogether. It says the containers are made for single use and should be recycled afterward, not reused. … Read more.