A Sept. 26th article by Greenbuilder Media, Double Zero: Net Zero Energy with an Eye Toward Water Conservation, reports that the Double ZeroHouse 2.0 in Lancaster, CA, was recently feted by RESNET as the best HERS-scoring home by a production builder in the nation. Current HERS ratings do not directly take into account water sustainability, though this was a big feature of the home's design. The Double ZeroHouse uses on-site grey water recycling by Nexus eWater to supply all water needed for irrigation.
From the article:
"The high desert, drought-prone location also allowed KB Home to showcase their water conservation mechanism - a new graywater recycling system from Nexus eWater. The system can treat up to 40,000 gallons of water a year for use as landscaping irrigation."
Double ZeroHouse 2.0