A new Health Canada report has found bisphenol A leaching out of the plastic of baby bottles marketed as “BPA-free.”

Dr. Brown’s Natural Flow bottle, a five-time winner of a “best of the year” award from the parenting magazine American Baby, was the worst offender, showing 0.9 parts per billion of BPA after 238 hours at 60°C. Other brands touted as being free of the toxic chemical ranged from from 0.002 to 0.025 ppb under the same conditions. For comparison, polycarbonate bottles can reach levels of 60 ppb after 238 hours.

“Technically, they’re not BPA free,” said Pete Myers, chief scientist of the Virginia-based foundation Environmental Health Sciences. “Manufacturers ought to do due diligence to determine whether they’re false positives or if there is truly even trace amounts of BPA, how is it getting in there.” (Canwest)

It’s not just the plastic bottles you have to worry about. Up until last summer, the epoxy liner in SIGG aluminum water bottles contained trace amounts of BPA, Steve Wasik, chief executive of the Swiss bottle manufacturer, announced this week on the company’s website. SIGG has since switched to new a “BPA-free EcoCare liner.”

BPA-free? I’ll believe it when I don’t see it.

Image: Dr. Brown’s