A building with a Rainwater Harvesting System has the potential to garner up to eight LEED points.

• 1 point for installing above-code measures that result in 20 percent water savings.
• 1 point for installing above-code measures that result in 30 percent water savings (typically waterless urinals or other measures).
• 1 point (innovation credit) for installing above-code measures that result in up to 40 percent water savings (rainwater harvesting or other water re-use).
• Up to 2 points for storm water reduction (storm water management practices).
• Up to 2 points for water-efficient irrigation.
• 1 point for reducing the project's sewage generation from use of potable water by 50% or more.

LEED Project Profile

Kroon Hall Rainwater Harvesting System to Save Half-Million Gallons a Year

By Alan Bisbort, from the Fall 2007 issue of Environment: Yale magazine.

The rainwater harvesting system, collaboratively designed by Nitsch Engineering, Philadelphia-based Olin Partnership and Arup, an engineering firm with offices in the United States and Europe, will allow all rainwater that falls on Kroon Hall’s roof and grounds to enter into a 24-hour-a-day recycling process that will take place in a pond and subterranean tanks. Together, Nitsch and Olin transformed the current patchwork of above-ground service roads into “watering holes,” figuratively and literally – gathering places for students, as well as for the reuse of harvested rainwater.

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