Recently I wrote to just say no to Nalgene hard plastic water bottles, since they contain bisphenol A (BPA), which leaches into your water and can possibly cause all kinds of health problems. Nalgene has heard our cries. They just announced that they will start making their bottles without the controversial BPA. Of course, government scientists are only slightly concerned, and feel that there are no known risks to human health, but Nalgene isn't taking any chances. They decided to make the switch in response to consumer demand.
It will take several months for Nalgene to ditch the BPA from their "Outdoor" line of polycarbonate water bottles. Just so you know, they do make other reusable bottles that don't contain this questionable chemical. Look for their newly unveiled Everyday line. They're made out of Tritan copolyester, which is dishwasher safe and BPA free. Of course, if you have old Nalgene bottles, I'd think of some creative ways to reuse them – piggy bank?