July 14, 2020
A new paper in Sustainability Science finds that the use of alternative water supplies, such as rainwater harvesting and greywater use, could offset up to 30 percent of total outdoor water demand for the Phoenix Metropolitan Area under modest implantation of these policies.
The paper, Simulating alternative sustainable water futures, is the work of sustainability scientists David Sampson and Nancy Grimm, sustainability fellow David Iwaniac, UREX affiliate Elizabeth Cook and CAP LTER affiliate Melissa Davidson. The authors adapted ASU’s WaterSim tool to explore differences in water demand and supply, as influenced by runoff, rainfall, changes in land use and land cover, population growth and improvements in water use efficiency.
The abstract follows.