Water bottles are made of completely recyclable polyethylene terephthalate (PET) plastics, but PETs don't biodegrade; they photodegrade, which means they break down into smaller fragments over time. Those fragments absorb toxins that pollute our waterways, contaminate our soil, and sicken animals. Plastic trash also absorbs organic ollutants like BPA and PCBs. They may take centuries to decompose while sitting in landfills,, ammounting to endless billions of little environmentally poisonous time bombs.