Friday, February 29, 2008

polycarbonate bottles, water


This may be worse than we thought
Reusable plastic bottles leach BPA at room temperature


A lot of people have those reusable polycarbonate water bottles; you can’t go to a college campus these days without seeing students carrying these multi-hued bottles around as they make their way through classes.

Well, a couple weeks back researchers at the University of Cincinnati released a startling new study showing that many of these bottles leach bisphenol A (BPA), an endocrine disruptor, into water that is being stored within the container.

These researchers found that these plastic bottles leach BPA into room-temperature water. That’s bad enough, but if boiling water is put into these bottles, the rate of BPA leaching goes up by quite a bit.

All the evidence out there tells us that this stuff is not good for you; Environmental Working G roup tested canned foods recently, which are lined with the same BPA plastic as these water bottles are made from. As it turns out, foods from metal cans contain significantly more of the chemical than water from bottles.

I applaud the use of reusable water bottles to cut down on the environmental impact of bottled water, but with this new research, stainless steel and metal water bottles are looking better and better. Some have a plastic lining, but Klean Kanteen and Sigg makes metal water bottles that are BPA free.

Parents who are concerned about baby’s plastic bottles should know that although this study didn’t look at baby bottles, it studied the same type of plastic. At this point, there’s enough research out there to justify the added expense of buying BPA-free or glass bottles. But an even more critical step would be to substitute powdered formula for liquid formula if your baby isn’t drinking breast milk. Babies don’t need to be getting extra endocrine disruptors in any form.

Back to the drinking fountain, I guess!

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