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NC-v4 WEc3:Cooling tower water use

100% nonportable water for cooling tower

Hi,

LEED reference document says in the Required document Table (page 309):

- Nonportable water analysis (if use 100% nonportable water) -------------------------------------- 2 points

Does that mean if I use 100% nonportable water, I only need to achieve 01 instead of 10 cycles of concentration calculation?

Please help,

Thanks,

Tom

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Devendra Chaughule
Senior Manager - Sustainable Services
Surmount
LEEDuser Basic Member
29 thumbs up

Tue, 01/17/2023 - 12:55

Tom, Did you get any response to this question?
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Afogreen Build
www.afogreenbuild.com
Green Building Consultant
LEEDuser Premium Member
249 thumbs up

Thu, 03/07/2024 - 08:24

Hi Thomas and Devendra,

No, aside from use >20% recycled non potable water, you also need to meet the minimum number of cycles without exceeding any filtration levels or affecting operation of condenser water system to earn 2 points (LEED BD+C v4 page 306).

The minimum cycles mean the least cycle can be achieved from one-time potable water analysis. Please kindly refer to LEED BD+C v4 guide page 309 for how LEED defines the minimum number of cycles.

Best regards - Afogreen Build Team

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