The report referenced below comes as the Environmental Protection Agency is in the process of updating its national standards for controlling runoff pollution from new development with regard to rainwater harvesting.

“As America’s expanding urban areas struggle with major water supply shortages and runoff pollution problems, capturing rainwater from rooftops provides a tremendous untapped opportunity to increase water supply and improve water quality” according to a recent analysis by the Natural Resource Defense Council (NRDC)

In the Seattle, area roof runoff is already mandated by the Federal Green Storm Water Infrastructure (GSI) for all new construction to disperse all impervious surface run off on site.

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