Received an email this week and timely reminder about polycarbonate baby bottles.
Is it safe to use plastic baby bottles? Many parents are unaware that Bisphenol-A leeches out of baby bottles over time, particulary when heated. Links to more information on http://www.organicbaby.co.nz/articles/food/first.html
Unfortunately, many parents heat baby's milk (and food) in a microwave, when a gentle heat in a beaker of warm water works just as well.
Glass bottles are freely available and quite safe - you just can;t let toddlers wonder around with them - which is a good habit not to get into anyway.
For older children: there is a new type of sipper bottle - I have just ordered one for my toddler - http://www.progressivekid.com/shop/Eco-FriendlyWaterBottles.aspx.