Americans drink billions of gallons of bottled water each year. Despite a significant fraction of bottled water being simply re-packaged tap water, consumers still buy water is relatively expensive bottles when potable water in generally available for free (or at subsidized prices). Studies have shown that, in blind taste tests, people can't really tell the difference between tap and bottled water. (Wine drinkers have also failed similar kinds of taste tests over inexpensive versus expensive wines.) So here are just a few links on the curious phenomenon of drinking bottled water when equally healthy tap water is widely available.
If you'd like to read more awesome and interesting stuff, check out this unrelated (but not entirely random!) Techdirt post