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FAQs about 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?

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?

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Forum discussion

EBOM-2009 WEc1:Water Performance Measurement

Water deduct meters acceptable as submeter?

Could a water deduct meter be used as a working submeter assuming it properly segregates systems such as the cooling tower or irrigation?

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Wed, 01/30/2013 - 18:17

Hi Ryan In order for a deduct meter to qualify, it would have to measure BOTH the total water use (by subsystem) AND the amount of water not discharging into the sewer. This credit requires that you provide weekly water meter readings of consumption and not absorption to landscaping or evaporation in the cooling tower process. So I'd double check the meter's data logging process and see if that meets the credit requirements. Hope this helps! Hannah

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