I'm pretty sure the newer Nalgene bottles are all BPA free.
I use one and like it but my daughter has a Sigg bottle that I like even better. I'd like to get a few more of those. I was having the same problem with my Britta pitcher (getting an off taste). I soaked it with baking soda and it did the trick. Then I started wondering if the Britta pitchers were BPA free and I can't find anything on their website. Seems silly to use the good water bottles if the water is coming from a bad pitcher so I've stopped using it. Sorry to be a bit OT but does anyone know about the Britta pitchers?
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"If you have men who will exclude any of God’s creatures from the shelter of compassion and pity, you will have men who will deal likewise with their fellow men." — St. Francis of Assisi, 1181-1226