Are you one of those weird people that think..

By and large, bottled water is just filtered tap water. All water tastes the same, but the minerals and other impurities in the water change the taste. Different locations will have different impurities and thus different tastes. Not mention, water seems to leech flavors from plastic as well. Which is part of what makes bottled water taste off. And why some people will specifically use a glass pitcher for putting water in the fridge