Our project will capture rainwater for the irrigation of the green roof and for the flushing of WCs in the building. What can we consider the TSS removal efficiency of the rainwater capturing? If we are reusing this water to irrigate and for flushing, does this achieve the credit without needing to achieve 80% TSS removal? Also, the greenroof is mostly composed of sedum, What would be a typiucal removal efficiency for those types of green roofs? Thank you!

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Michael DeVuono

Regional Stormwater Leader

Arcadis North America

LEEDuser Expert

144 thumbs up

Fri, 09/27/2013 - 15:38

Capture and reuse will give you 100% TSS removal, or very close to it. Green roofs, depending on the layout, I treat more like a vegetated filter strip, 35-50% TSS depending on the size, but this needs to actually treat something .... green around the edges, treating the interior mechanicals and such that drain outwards.

Mike D

LEEDuser Basic Member

45 thumbs up

Fri, 09/27/2013 - 16:05

So if we capture rainwater and reuse, do we need to show any type of filtering or will this automatically acquire the credit?

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