6 ways conventional wisdom wastes money
Bottled water is healthier than tap
We've all heard stories about sketchy tap water. But a lot of bottled water is not much better. In fact, there is less quality oversight for bottled water than there is for tap water, Karp says.
"This is a beverage that falls from the sky for free. It's given away at public water fountains," Karp says. "Yet somehow, this industry has convinced us to go to the store (and) pay real money for this stuff."
Tap water is regulated by the Environmental Protection Agency, Karp says, and checked for quality more frequently than bottled water, which is regulated by the Food and Drug Administration.
And, according to the EPA's website, "Some bottled water is treated more than tap water, while some is treated less or not treated at all."