Now, a group in California, Take Back the Filter, is gearing up to do the same thing with used Brita filters—which aren't recyclable in the U.S., but are in Europe...We’ve had our Brita for a few years, and the water tastes fine with regular filter replacements. We were putting a new one in yesterday, and we weren’t sure what to do with the old one—they’re not recyclable— when we stumbled on this petition by Take Back the Filter.
It seems like the filters are recyclable in Europe but not the U.S. because a recycling program isn’t set up stateside. They’re also collecting the filters, (so far, they’re at 264) and they have an address to which you can mail your used ones. Check out more at Take Back the Filter.