Municipal tap water is typically held to higher quality standards than bottled water, and filters work wonderfully for purity.
Also, it's far, far, far safer to fly than to drive.
People are stupid control freaks. They feel more in control with bottled water. That's all. This will never fly because they can't see the water, hence less control. Whoever came up with this marketing concept doesn't understand the US consumer *at all*.
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