BPA (Bisphenol A) is a hot topic these days, especially in baby products. Though I do not believe all that is Wikipedia, I do think this is a good explanation of BPA.
I have put together a list of Brands that offer BPA Free Bottles and or Sippy Cups. Just remember to read the fine print, and know that some brands offer only a few BPA Free products, while others have all BPA Free products. I hope this helps in the frustrating search for safe baby products.
For a quick reference check out Babies R Us, babystyle, Target and Walmart. They provide a BPA free product search on their websites. Go to feeding and you should see the BPA Free link.
Green to grow
sigg todler water bottles
kid basix the safe sippy
iplay aqua bottle
the first years