Living in cities where water flows effortlessly from our taps and fountains, it's easy to take it for granted. City of Water, the second book in the ThinkCities series, shines a light on the water system that is vital for our health and well-being. The narrative traces the journey of water from the forests, mountains, lakes, rivers and wetlands that form the watershed, through pipes and treatment facilities, into our taps, fire hydrants and toilets, then out through storm and sewer systems toward wastewater treatment plants and back into the watershed. Readers are encouraged to think about water as a finite resource, and to take action to prevent our cities and watersheds from becoming more polluted.