"Tapped" looks into the bottled water industry and its long-term effects socially, economically and ecologically. The filmmakers focused on industry giants such as PepsiCo and Nestlé Waters, visiting a town containing a Nestlé factory as well as running tests on the bottles the company uses for its products. Their results came back showing "several potentially harmful chemicals, some known carcinogens". The documentary also focused on the amount of bottles that are recycled, noting that "Forty percent of bottled water is really just filtered tap water, and every day we throw away 30 million single-served bottles of water as plastic waste.