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Activated carbon is a special filter media that removes chlorine, chloramines, and organic compounds from water.  Some activated carbon filters can be connected to your home’s water supply, or you can buy a filtered pitcher that uses an activated carbon filter.  Activated carbon filters remove both chlorine and chloramine.  Choose an activated carbon filter that has been certified by NSF International, a nonprofit that tests and certifies water filtration products. Reverse osmosis refers to the process in which ions and particles are removed from the water.  Reverse osmosis systems can be installed directly beneath your kitchen sink or where your water supply enters your home, and are therefore very convenient relative to other dechlorination methods.  But they’re also very expensive, often reaching several thousand U.S. dollars. Additionally, reverse osmosis filters are energy-intensive and produce large volumes of wastewater. All filters need to be changed eventually.  The amount of time that passes between filter changes depends on your filter’s size and how heavily it’s been used.  Check the manufacturer’s directions to ensure you’re changing your filter with the appropriate frequency. Boiling creates heat and aeration (via bubbles), the combination of which is sufficient to remove volatile chlorine after 20 minutes.  If you’re trying to dechlorinate large batches of water, however, this method is probably not practical. Boiling for at least 20 minutes will also remove chloramine, which is added instead of chlorine in some areas.
Use an activated carbon filter for drinking water. Install a reverse osmosis filter in your home. Change your filter as needed. Boil chlorinated water for 20 minutes.