Dear all,
This is first time I use 'Indoor Water Use Reduction Calculator' to calculate indoor water consumption. The project is designed to use the alternative water sources (rainwater capture, recycled water) to reach points for this credit.
Correct me if I am wrong, but in the 'Indoor Water Use Reduction Calculator', I didnot see part/item used to calculate the water reduction by using alternative water sources.
I appreciate any advices, suggestions!
Calie Gihl
Design EngineerLEEDuser Expert
19 thumbs up
November 7, 2017 - 4:48 pm
Hi Hanh,
When using alternative or potable water source to comply with this credit, you need to provide the alternative water system design drawings, a narrative describing the alternative source, and calculations confirming the alternative water quantity. Include climate data and storage size/use calculations as well.
Once you calculate your annual design case water consumption, non-potable/alternative water use is subtracted using the equation in the reference guide (See: Step by Step Guidance). By this language, it doesn't look like it is included with the calculator, but as a separate calculation narrative. I hope that helps!