Most straight forward way is a filter based on active carbon. They are available in various forms often incorporated in jugs like Brita filter which can be found in the Netherlnds, assuming that where you want to use it.
Kind regards K.
More environmentally friendly than plastic Brita filters are Bamboo Charcoal Water Filters which are widely available online. The carbon absorbs odours and other impurities from water, including chlorine.
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