Whether because of convenience, taste, advertising hype, or whatever, so many people use bottled water, even at home. It seems worth the price. But is it? This chart explain the actual cost. (By the way, the taste is usually because of chemicals, like chlorine, used to purify the tap water. If you draw a container–I use a 1.5 ltr. beverage dispenser–and let it sit out for several hours, uncovered, the taste goes away and it tastes like bottled water. Cap it and put it into your fridge.)