What a bummer! After spending way too much of "safe" water bottles for our family, news comes out that they're leaching BPA anyway! Sigg has reworked their liners, but those have had issues as well. Our Whole Foods is doing an exchange program for them. You just bring your old bottle, and they'll give you a new-liner same size bottle for free.
To learn more (and if you don't have a whole foods close), click here -