I personally haven't used one, though I have looked into it a bit. Theoretically speaking, chlorine is bad for organic gardening because it will kill off bacteria, good and bad, and you want the bacteria to thrive in the soil. Anyway, some garden hose filters may be able to remove chlorine, if that is what your city treats their water with, however in Austin(and in many major cities nowadays) chloramine is used and is much more stable, therefore harder to remove. For this I need to install a whole house filter type setup, with a specific activated charcoal filter, and it gets pretty expensive, so if that's the case, I would consider installing a good rain catchment system if possible, which is what I am doing... rainwater is always the best
