This documentary looks at the potential hazards caused by factory farms in the United States, particularly by waste disposal. Beginning with a history of the American food system, River of Waste shows its evolution to large-scale corporate farms where pollution and use of growth hormones threaten both individual health and the future of our planet.This documentary looks at the potential hazards caused by factory farms in the United States, particularly by waste disposal. Beginning with a history of the American food system, River of Waste shows its evolution to large-scale corporate farms where pollution and use of growth hormones threaten both individual health and the future of our planet.