BPA is not found in every plastic, but may be
found in some water bottle plastic. The EU and the
EPA recommend a daily intake level of less than
0.05 mg/kg of body weight (equivalent to ~0.02 mg/
lb of body weight). So if you weigh 100 lb, then 2
mg/day is the limit.
I found a paper from the University of Cincinnati,
College of Medicine from 2011 that reports that at
room temperature, polycarbonate water bottles
release 0.2 to 0.3 mg of BPA into a liter of
So, according to this study, a 100 lb person could
drink 10 liters of bottled water or less per day
to stay in the recommended limit.