Water is important to every cell, tissue, and organ in your body. The best way to stay hydrated: glug-glug-glug glasses of water throughout the day. But which kind of water? Some people claim that alkaline water is better than anything you could get from the tap. But the science isn't there to back it up.

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What Makes Alkaline Water Different?

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Water is a combination of hydrogen and oxygen. That's why you call it H2O. Water’s pH level determines how acidic it is and ranges from 0 to 14. A pH of 7 is considered neutral. That “seven” number is considered neutral or balanced between acidic and alkaline. If water is below 7 on the pH scale, it's "acidic." If it's higher than 7, it's "alkaline."

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EPA guidelines state that the pH of tap water should be between 6.5 and 8.5. Still, tap water in the U.S. tends to fall below that -- in the 4.3 to 5.3 range -- depending on where you live.

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Bottled water falls under different standards depending on whether it claims to be alkaline. Bottled alkaline water has a pH level above 7. In some cases, manufacturers use a special device to change the chemical makeup of the water. Other times, they add nutrients to the water to change its pH.

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- Article from WebMD