I'm working on a fascinating manuscript called Healthy Child, Healthy World by Christopher Gavigan. It's about reducing the amount of potential harmful chemicals our children (and we) are exposed to in the home.
Did you know that a chemical called Bisphenol A (a polycarbonate) is used in the manufacture of some plastic water bottles and baby bottles? When we drink from these bottles, the BPA, as it's called (considered a hormone disruptor), can mimic estrogen in our bodies and cause problems with reproductive growth, weight, etc. I did not know that!
So how do you know if your bottle contains BPA? Check the bottom for a "7" symbol--and don't drink if that number is there. (Read this article for more information on what codes on plastic bottles mean.)
Just thought you'd want to know.