How does dirty river water become clean drinking water? Join Lila & Andy as they discover the amazing science behind water treatment! Real knowledge for curious minds. When Lila and Andy explore water systems with their civil engineer dad, young readers discover the fascinating journey water takes from rivers and lakes to our kitchen taps. Learn how coagulation makes tiny dirt particles stick together, why flocculation works like a giant cake mixer, and how pump stations push water uphill to reach tall buildings. This revised and updated second edition now includes a comprehensive quiz to test understanding, a detailed glossary of water treatment terms, as well as a list of exciting career opportunities, making it even more valuable for educators and curious young minds. In this book you will discover: How water treatment plants use screening, filtration, and disinfection to remove dirt and germs The step-by-step clarification process, including coagulation, flocculation, and sedimentation Why civil engineers design different-sized treatment plants for mountain lakes versus muddy rivers Different water sources, like surface water from rivers and groundwater from underground aquifers Real-world applications kids use daily, from turning on taps to drinking at school fountains How water distribution networks use storage tanks, underground pipes, and pump stations This scientific adventure combines engaging storytelling with real engineering concepts, making complex water treatment principles accessible for young learners. Perfect introduction to STEM careers in civil and environmental engineering. Perfect for: Young readers interested in how clean water reaches their homes (ages 8-14) Middle school STEM curriculum support for environmental science and engineering units Homeschool science and technology resources about water cycles and treatment Future engineers who love asking "how does that work?" about everyday systems Part of the beloved "Lila and Andy learn" book series, this collection builds scientific literacy one fascinating topic at a time. Preparing tomorrow's engineers today.