That stuff is delicious. It's better for you, and the environment.
At my old house, the tap water was from a well. It had a nice falvor, too. A few months before we moved, we se something on the news that said it was lead making the water taste like that, and that the city was getting sued because a few young kids had some messed up brain disorder caused by lead poisoning.
The water at the house I live in right now has a bleachy smell and flavor, but I have a separate thing on my sink that filters out the bleach.