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Forum discussion

CI-2009 WEp1:Water Use Reduction—20% Reduction

Combination Shower/Bathtub in Dormitory

Vicki Rybl

Energy Engineer

RDK Engineers/NV5

LEEDuser Basic Member

0 thumbs up

Project location :

August 25, 2016

Hi All, I am working on a project which is a dormitory. Each living unit has a bathroom which, along with a toilet and sink, contains a combination shower/bathtub. The tub faucet and showerhead will never run at the same time, and both have a maximum 1.5 gpm flow rate. How should I document this in the water use reduction calculator? Both fixtures are listed in our plumbing schedules so I don't want to confuse the GBCI reviewer.

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Kristina Bach

VP of Innovation

Sustainable Investment Group

LEEDuser Basic Member

110 thumbs up

Thu, 08/25/2016 - 15:42

LEED does not currently include/consider bathtub usage so the bathtub faucet is not applicable. The logic I've heard is that as bathtubs are typically filled to a specific level/volume, there isn't really a benefit to a low-flow fixture on the bathtub faucet. You should put in just the showerhead in your calculator and just its usage/flow rate (1.5 gpm).

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