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FAQs about WEc1 :

If a building’s meter or submeter was installed less than a year ago, how can we provide monthly and annual summaries?

The water utility for the project building supplies electronic readings of whole building water consumption at least weekly that the project team can access. Will the electronic readings suffice for the required documentation for WEc1?

We own our water meters and the manufacturer of the submeter does not provide documentation recommending a calibration interval. How can we document that we’ve met the calibration requirements?

For meters not owned by a third-party, when should the meter calibration take place in order to comply with WEc1?

We can't get weekly readings from the main building water meter. However we can take daily readings from a water subsystem (e.g. irrigation or cooling tower makeup). Can we pursue Option 2 (water subsystem metering) without pursing Option 1 (whole buildin

What kind of meter reading documentation is required to meet the items requested on the credit form? The LEED Online credit form requests both weekly readings, and then also monthly and annual summaries.

What is the best way to track the monthly and annual water consumption summaries for the whole-building and subsystem water meters?

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Forum discussion

EBOM-2009 WEc1:Water Performance Measurement

Process Water Definition

Profile picture for user michael.smithing
Michael Smithing
Director - Green Building Advisory
Colliers International Ltd.
LEEDuser Basic Member
201 thumbs up

Part of the definition of process water states that it can also refer to water used in operational processes, such as dishwashing, clothes washing, and ice making. On a recent project we achieved this point by sub-metering the car wash facility (and decorative pool) in our office building. Has anyone had success (or failure) treating the water used in the building restaurant as process water (used in the process of food preparation)?

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Profile picture for user tristanroberts
Tristan Roberts
Representative
Vermont House of Representatives
LEEDuser Expert
7780 thumbs up

Fri, 11/23/2012 - 16:03

Michael, I haven't done this but I don't see any obstacles to what you're suggesting.

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