The 2014 Toledo, Ohio tap water ban has, at least temporarily, put a spotlight on United States water supplies. Consequently, many Americans have begun to take a closer look at the quality of the fresh water bodies being used to supply tap water to their homes. Therefore, this Note analyzes the problems currently threatening the lakes, rivers, and other surface waters that are the source of fresh drinking water for huge populations in the United States. Part II examines the problem of nutrient pollution and explains the harmful effects it has on human health. Part III provides an overview of the current laws governing nutrient pollution and tap water quality. Part IV analyzes the source of the problem and demonstrates that agriculture is largely responsible. Lastly, Part V suggests that the problem of nutrient pollution can be resolved through a reinterpretation of the Clean Water Act’s definition of a point source