Starting in January, you'll be able to recycle your Brita water filters in the US, by dropping them off at participating Whole Foods Market stores or by mailing them to Preserve, the company that will be handling the recycling process. Brita will post the full details of the program on their website in January.
For now, this program only applies to Brita's pitcher filters, not to their faucet-mounted filters, which are made from a different type of plastic. But this is certainly a step in the right direction considering the hundreds of thousands of these filters produced each year by the company. Keeping any of them out of the landfill is progress.
We can thank the Organic Consumers Association and takebackthefilter.org for helping to convince Brita of the need for such a program in the US.