This story originally ran in Engineering News-Record on May 25, 2016.

Earlier this month, the first building in the U.S. permitted to treat rainwater for potable uses also became a Living Building—the highest level of ultra-green-building certification granted by the International Living Future Institute. The 10,520-sq-ft Brock Environmental Center in Virginia Beach, Va., is one of 44 buildings to have achieved partial or full certification under ILFI’s decade-old Living Building Challenge, which is considered the most rigorous sustainable design, construction and performance standard.