Researchers conducted a study where they asked people on the street to sample bottled water and tap water without knowing which was which, and state their preference. Most people could not distinguish between the two and said they both tasted good. The economics of bottled water are staggering, with $100 billion spent annually worldwide even though the production costs are mainly tied to the packaging rather than the water itself. Bottled water costs much more per gallon than tap water. The article also discusses whether bottled water is actually healthier than tap, noting that bottled water is not required to be tested as frequently and allows for some contamination, while tap water in regulated municipalities is generally very safe.