State warns on bottles with BPA
How to avoid bisphenol A
Q. How do I know if a bottle has BPA in it?
A. Polycarbonate, the kind of plastic that contains BPA, is hard and clear. It may also be tinted. Look for a code on the bottom. If you see a number 7 recycling symbol, and the letters “PC”, the bottle contains BPA. You should also avoid bottles with only the number 7; while not all contain BPA, most do.
Q. What should I use instead?
A. Glass or stainless steel bottles do not have BPA. There are also several kinds of plastic baby bottles that do not have BPA. However, studies on BPA-free products are too limited to recommend one product over another. Be sure you look at the bottom of the bottle and read the label carefully to make sure you are choosing a BPA-free bottle.

Q. What else can I do to protect my child?
A. Eat fresh or frozen fruits and vegetables instead of canned products (the lining contains BPA) if you’re pregnant or breastfeeding. Do not heat food or drinks in polycarbonate plastic containers.
Massachusetts Department of Public Health, Clean Water Action.
Daley, Beth. “State warns on bottles with BPA.” The Boston Globe. Web. 30 Aug. 2009. <http://www.boston.com/news/health/articles/2009/08/04/massachusetts_issues_warning_on_bpa/?page=2>.