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Farm runoff, storm water, and sewer water all can be called wastewater. These aren't the only kinds of wastewater, though. Readers learn how wastewater is created in the first place and the problems it presents around the world. Perhaps most importantly, readers are introduced to water conservation efforts being made in many countries as well as things they can do at home to conserve water. Full-color photographs complement the main content while fact boxes highlight other interesting details about wastewater and its often dire consequences.