It is worth noting that tap water in many places (such as San Francisco) is treated with chloramine instead of chlorine. As chloramine is less volatile, it CANNOT be removed by letting the water sit overnight or by boiling, so you can only use those methods in areas where chlorine is still used. If your local utility uses chloramine, you probably need to go the Brita/carbon filter route, use bottled water, or maybe Campden tablets like home brewers?

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