Hi
Does anyone know if sea water flushing which is non-potable water can contribute towards these credits.
We are working on new LEED-CI project in Hong Kong that uses sea water for flushing connected to the sewer system.
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Tristan Roberts
RepresentativeVermont House of Representatives
LEEDuser Expert
11477 thumbs up
August 12, 2011 - 12:40 pm
Julian, I don't know for sure since this is very uncommon, but I expected seawater would be allowed for this credit.
JOHN BURNETT
FAC-LEEDership19 thumbs up
September 7, 2011 - 1:45 am
The response to a CIR issued recently for a project in Hong Kong suggested it was possible for sea water flushing to contribute to the water use credit. This is logical as it is non-potable water.
However, in a recent submission for a CI project the project team asked whether seawater from a municipal seawater supply system can be used to claim credit for WEp1 and WEc1. The response: No, per LEED Interpretation 1551, municipally provided greywater (in this case seawater) cannot be used to meet credit requirements.
ID 1551 is dated 2006: Municipally reclaimed water is not applicable to WEc3 achievement (NC Version 2.0). This credit focuses on fixture efficiency and on-site water reuse.
There seems to be a mismatch between the response to the CIR and ID1551, else the CIR response would have been 'negative'!
The logic is that if I choose a building near public transport it is energy efficient, so I get points. Surely, if I choose a building using seawater flushing, which is potable water efficiency, I should get an advantage too?