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FAQs about WEp1 :

Can I include process water savings in order to earn an Exemplary Performance point?

Will the reviewers accept a spreadsheet as a plumbing fixture schedule in lieu of the plans from the Construction Documents?

In LEED review comments I've been referred to the Water Use Reduction Additional Guidance document. I didn't know this was a required reference document.

Should I include bar sinks? What about mop sinks or janitor sinks? Swimming pools? Safety showers? Bidets? Tub spouts?

We provided new showers in our project to comply with the alternative transportation credit. Should they be considered in WEp1 calculations?

Can you explain the 12-second duration for metering faucets?

Can I use a nonpotable water source to contribute to WEp1 compliance?

Our project does not have any eligible water fixtures in the project boundary. Can we comply with WEp1?

We are having trouble finding EPAct-compliant fixtures. Is that a problem?

Where can I find a clear meaning of "public" and "private" as relevant to lavatory faucets?

Our project is a factory with historically a 95% male workforce. The restroom design accounts for this. Can I argue that the male/female gender ratio is different than 50/50?

Are shower duration controls an acceptable water-saving strategy?

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Forum discussion

NC-2009 WEp1:Water Use Reduction—20% Reduction

Rainwater

FABIO VIERO

Head of Sustainability

Manens S.p.A.

LEEDuser Premium Member

16 thumbs up

April 19, 2014

Hi, I'm now working on a project under LEED certification according to NC v2009. We collect rainwater to provide non-potable water to wc. May we consider this water in WEp1 and WEc3 calculation? If the answer is yes, since this form does not allow to account it as WEc2, may we click on one of the two option related to "ADDITIONAL DETAILS" in order to upload a dedicated spreadsheet to justify it? Thanks!

Post a reply

Jens Apel

LEEDuser Basic Member

89 thumbs up

Tue, 04/22/2014 - 11:18

Fabio, you can consider this in the calculations. See the document here: http://www.usgbc.org/resources/water-use-reduction-additional-guidance. In a recent project with approved design review I uploaded the calcs and narrative in WEc2 and used the alternative compliance path text box in WEc3 to refer to WEc2 (WEp1 was achieved with low flow fixtures).

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