How did the nascent bottled water industry make a market for a product that for much of the past century was largely viewed as an unnecessary or wasteful luxury good? In just four decades, this commodity has transformed into a ubiquitous consumer object that is now the primary, and sometimes sole, source of drinking water for billions of people globally. The story of bottled water’s resurgence in places with abundant, clean tap water revolves around the question of why people have increasingly come to distrust their tap water, and how the expanding bottled water industry has fueled and taken advantage of this phenomenon.