The tragic story of Flint has made it increasingly clear that the public needs to know how to evaluate sources of information. All of this is occurring in the age of "fake news," which heightens our awareness of the challenge of determining veracity. Furthermore, a flood of information can be found at our fingertips 24 hours a day. A quick Internet search can glean information that supports your viewpoint (whatever side you may be on) and crushes the opposition. We might begin to wonder if there is such a thing as "truth," and whether we can help students wade through the endless muck of false or misleading information to find it. This article explores how to teach source evaluation to upper elementary students with a focus on the right to clean water that is recognized in a United Nations resolution of 2010, and based on the 1948 Declaration of Human Rights.