The amount of water used outdoors. We estimate this as a proportion of the total water used inside, which is the piped water demand adjusted for graywater recycling (if any).
Outdoor water use = total inside water * (proportion of piped water used outdoors / (1 - proportion of piped water used outdoors))
Used to calculate: evapotranspiration, impervious runoff from hardtops, pervious runoff from soil, leaky pipes and graywater recycled
Depends upon:
—Parameters: proportion of piped water used outdoors
—Other metrics: water used inside