People don’t usually think about tap water – it’s a necessity of life that is easily available. But it’s anything but basic. Drinking water not just hydrogen and oxygen; it has minerals and chemicals, some of which can be very harmful. Many opt for bottled water, but it is not as heavily regulated or tested as tap water. [See: 15 Easy Ways to Drink More Water Every Day] The Environmental Protection Agency (EPA) has set standards for drinking water quality and oversees the states, localities, and water suppliers who implement those standards. The cities on the following list are based on the winners of the Berkeley Springs International Water Tasting, nicknamed the “Academy Awards of Water,” which is the largest water tasting competition in the world. A study evaluating drinking water in major cities, conducted by the University of Cincinnati, has also been taken into consideration.