Water saving is an important aspect civil engineering and building design around the world. Alternative water sources as well as water saving appliances have been studied by many researchers in order to maximize water savings in buildings and promote building design that favours water savings. This volume explores topics related to water savings: rainwater tank sizing and modelling, wastewater treatment and reuse, relationships between user behaviour and water savings, health issues related to water savings and environmental analysis of rainwater and grey water use in buildings. Water Savings in Buildings is a handy resource for researchers, post-graduate students, undergraduate students and engineers working in water utilities, environment agencies and associated industries interested in understanding the basics of implementing systems to achieve water savings in buildings.