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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

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

Urinal pre-wash and fuzzy control

Noriko Nagazumi

Woonerf Inc.

LEEDuser Basic Member

57 thumbs up

April 2, 2013

Hi all, How would you set the water use for urinals that: 1. Have a 2 liter pre-wash that may be used or turned off 2. Have fuzzy control for the flush (2 to 4 liters) The worst case is 6 liters, but the actual water usage depends on building operation and the fuzzy control. Do you think it is fair to exclude the pre-wash and pick up the middle value for the fuzzy controlled flush (3 liters)? Thanks in advance,

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