All this study says is that some BPA in the plastic seems to get into the water. Which we might expect.

We still have no evidence if BPA is harmful to humans and if so, in what dosage. It should be noted that the concentration of BPA in their urine was already X ppm before they started and only went to 1.69X after drinking from the PC bottles. Also note that the article doesn't report what the actual concentrations where. For all we know, the normal level could be 3 molecules of BPA per thousand gallons and drinking from the bottles brought it up to 5 molecules.

We could just as well say:
New study shows that drinking water often results in increased levels of water in the urine. Exposure to water has been shown to cause drowning in certain animals, such as lab rats. Therefore we should stop drinking water.

This is the problem with most "science" reporting and a lot of the science itself.