From a doctor at Johns Hopkins...
To date, no independent investigation has shown that bottled water passes more safety and health checks than tap water. In fact, the National Resources Defense Council (NRDC) tested 103 brands of bottled water and concluded there was no assurance that water out of a bottle is cleaner or safer than water from the tap. Another of their conclusions didn't surprise me either: They estimated that 25 percent or more of bottled water is nothing more than tap water.
Given the lack of objective research or evidence to favor bottled water over tap water, the decision on which to drink comes down to an individual choice. However, two things we know for certain: bottled water is more convenient and more expensive than tap water.
The NRDC reported that a five-year supply of bottled water cost over $1,000 compared with $1.65 for the same amount of tap water. Not to mention the environmental impact of the many discarded plastic water bottles.
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