Bisphenol-A in your polycarbonate water bottle
Somewhere along the way, I picked up the idea that polycarbonate plastic was safer to use in beverage and food containers than plastics like PET, that it didn't leach toxic chemicals.
Oops.
Polycarbonate plastic molecules are made up of strings of Bisphenol A (BPA), which was originally created as a synthetic hormone. As polycarbonate ages, wears, or is exposed to heat, acids, or bases, BPA leaches out.