Water is not just an important part of Earth's composition, it's also vital to every single human being. Every person uses water every day, but water pollution poses a big threat to our safety. Readers learn about the causes of water pollution--both natural and manmade--as well as the harmful effects of unclean water, since both animals and humans alike rely on water for survival. Vivid photographs of sewage pollution, oil pollution, and agricultural pollution help readers visualize the issues at hand, while accessible text breaks down the concerns and teaches readers how they can help stop water pollution.