Has anyone used water treatment for a beer kit? It occurs to me (correct me if I'm wrong) that a kit is dehydrated hopped malt extract and so should contain all of the minerals appropriate for a beer of that style. That being the case, you would expect to brew it using water with no mineral content, i.e. distilled water. What do you think? The last kit I brewed with N Hampshire water had a slight unwanted flavour, which I don't find in commercial brews, and which I couldn't quite place (although it did diminish with ageing). I'm wondering if this was due to the water, and thinking, as a first step, that I would remove chlorine/chloramine via 1/2 a Campden tablet. Has anyone done this? Are there any other steps you might take?