A lot of houses are off-the-grid where electricity is concerned, thanks to solar panels, wind turbines and battery banks. Far fewer can say the same about water. Now there is one in Bend, Oregon, dubbed the Desert Rain House, that boasts a completely closed-loop water system. … The home was designed by architect Al Tozer of Tozer Design, also based in Bend. It was built to satisfy the Living Building Challenge, a sustainable development process that is more rigorous than the LEED standards for green design most people have heard about.