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FAQs about 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?

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?

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Forum discussion

CS-2009 WEp1:Water Use Reduction

Alternative Compliance Path Documentation

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R Jones
LEEDuser Premium Member
60 thumbs up

I wish to pursue an Alternative Compliance Path for taking account of collected rainwater being used for the toilet and urinal flushing under credit WCp1 and WE3. Should icomplete the template as having 0 flush volume for the WCs and urinals to "trick" the template into Attempting 4 points? as in our case the provision is actually greater than demand. If it was less than 100% i would pro rata this - correct? thanks

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Emily Catacchio
Sustainability Specialist
Wight and Company
LEEDuser Basic Member
415 thumbs up

Fri, 11/11/2011 - 15:09

Vivien,I would not reccomend "tricking" the template. The form is asking how much water is used and does not consider what type of water. Even if it is 100% rainwater (which is fantastic!) you're still using that water so conservation is important. I would suggest selecting the "Alternative Compliance Path" in the form and then providing a narrative describing your strategies.
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R Jones
LEEDuser Premium Member
60 thumbs up

Fri, 11/11/2011 - 15:17

Thank you - I also just foundthis additional water guidance that has been recently updated http://www.usgbc.org/ShowFile.aspx?DocumentID=6493 I can document the calculations as a narrative - but this won't take account of the points actually achieved by using rainwater to achieve >40% - how should i document this on the template so that it takes account of the 4 points in its calculations without - entering 0 as the flush volume?
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Susann Geithner
Principal
Emerald Built Environments
LEEDuser Basic Member
900 thumbs up

Fri, 11/11/2011 - 18:01

The LEED online template will not show it correctly. You will sumit your documentation under alternative compliance path. You than also note this under WE c3, so the reviewer sees that you are using rainwater. This is what we did in a recent project and it's also what the GBCI recommended to do. Also make sure to show that the precipitation and tank size are working throughout the year to cover the water demand of your fixtures.

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