Solar Decathlon winning entry is all about water.

Inspired by the Chesapeake Bay ecosystem, the University of Maryland's winning entry in the U.S. Department of Energy Solar Decathlon 2011 is named "WaterShed"—a design that proposes solutions to water and energy shortages. The house is a model of how the built environment can help preserve watersheds everywhere by managing storm water onsite, filtering pollutants from greywater, and minimizing water use. The photovoltaic and solar thermal arrays, effectiveness of the building envelope, and efficiency of the mechanical systems make WaterShed less thirsty for fossil fuels than standard homes.

Read more about the project here.

Watch a YouTube video about the project here.