Water conservation is one of the most effective sustainable design practices, yet few professionals know how to collect and reuse rainwater effectively.  Homeowners and communities advocate for using rain barrels for irrigation, but a rainwater harvesting strategy goes beyond irrigation. To be effective, rainwater harvesting requires an integrated approach to building design. This book covers how to plan for and implement an effective rainwater harvesting strategy: Develop rainwater harvesting strategy, taking into account climate, public policies, environmental impact of water, and end uses Calculate water availability and water demand Design for using rainwater in building systems Safety and maintenance of a rainwater harvesting system Understand water policies Case studies are included through out, and the companion web site houses worksheets, calculators, and other resources for professionals and students.