I'm going to be throwing my new Sigg water bottle out. It has just been released that some of the bottles contain BPA which is one of the reasons why I switched to a Sigg bottle- to get away from the plastic BPA bottles. An easy way to check and see if yours has it is to look inside. If it has a coppery look to it than you might want to toss it. It's frustrating to know that Sigg was not upfront about their bottles. Here is a link to an article that has more info including an exchange program for your Sigg bottle. I'm not wasting my money to ship it back.