Filters like that don't do much for brewers and they can cause problems in your fixtures due to the lack of disinfectant in your water.
So I imply that filters like that remove all the disinfectant (chlorine) from the water supply, but they need to have a low flow rate in order for that to happen. Since most users don't run their water faucets at a near-trickle, you don't actually assure yourself that all the chlorine is removed. So, its kind of a lose-lose situation with those filters. The only thing that you can probably assure yourself about, is that the sediment will probably all be removed. But that's rarely a problem anyhow.
Sorry to be raining on the parade.