There is a removable filter on the spout which is just a wire mesh attached to a plastic frame, and a little bit of plastic that attaches that to the metal. Cuisinart states it to be BPA free.

I don't find any of it reason for concern though. It's not submerged during boiling when at the max fill line, and even then I'm sure it's a heat safe plastic. The filter itself is easily removable, the mount is probably removable with a little effort. I'd much rather have the filter, given my hard water and the little chunks of limestone the filter likes to catch.