Problem: Do you agree with this statement? The essential determinants for having drinking water, it seems, are the same as those studied in other public policies recently by us. These are dilemmatic, complex, transnational policies with conflicting interests. As we know, the need for drinking water for human consumption is a transnational issue and raises the following question. How to achieve clean water, as a United Nations objective, in the context of exponential population growth and climate change, particularly the increase in air pollution? Like air contamination, water contamination is also the work of man. It is therefore important to analyze what challenges exist today regarding public policies so that Nations can have drinking water for their populations.