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Are there any requirements for the frequency of meter reading/recording?

If a building only has one of the required systems, is it enough to submeter that one or are you not eligible for the credit at all?

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NC-v4 WEc4:Water metering

Number/Location of water meter

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LEEDuser Basic Member
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I'm confused if we need to provide the water meter every indoor water fixtures or per floor. Does anyone has experience on this? Thanks.

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Tue, 02/21/2023 - 09:34

I have the same problem. Did you manage to solve this? 
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Devendra Chaughule
Senior Manager - Sustainable Services
Surmount
LEEDuser Basic Member
29 thumbs up

Tue, 02/21/2023 - 10:03

You can provide water meters separately for the water line only connected to plumbing fixtures, not required for every plumbing fixture or floor. If there is any further pantry served on the same line, then a separate water meter is to be provided from the pantry water line.

Tue, 02/21/2023 - 10:16

Devendra, thank you, that is very helpful. Could you tell me what do you think about this situation: I have water line connected to all plumbing fixtures, including ones that we have in utility room (there is sink and valve). Should we submeter the utility rooms separately? Does LEED treat it as process water? 
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Devendra Chaughule
Senior Manager - Sustainable Services
Surmount
LEEDuser Basic Member
29 thumbs up

Tue, 02/21/2023 - 10:33

Yes, you can submeter the utility rooms separately. Providing a water meter to the major water source ie plumbing fixtures is advisable. The submetered utility room water consumption can be deducted from the measured total water consumption of the plumbing line to measure the usage of the indoor plumbing fixtures.

Tue, 02/21/2023 - 10:45

But is it necessary to deduct utility rooms? If we don't submeter utility rooms separately, will that not be accepted, because it is treated as process water in LEED assessment? 
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Olga Yuil
Green Building Consultant
LEEDuser Basic Member
20 thumbs up

Wed, 02/22/2023 - 23:45

Hi Aleksandra, I do recommend to please review the definition of PROCESS WATER. In my opinion and understanding, I do not think utility rooms (same as janitor room?) is considered process water.
PROCESS WATER: water that is used for industrial processes and building systems, such as cooling towers, boilers, and chillers. It can also refer to water used in operational processes, such as dishwashing, clothes washing, and ice making. (Page 307 Definitions - Credit Indoor Water Use Reduction, LEED Reference Guide for Building Design and Construction V4 Updated August 2020).
If this is the case then utility rooms (same as janitor room?) are optional to be submetered alone and can not be submetered included nor as part of indoor plumbing fixtures and fittings subsystem nor other process water subsystem nor other subsystems. Good luck!

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