Effluent for Dishwashers and Clothes Washing Machines?

Kimberly Frith

LEEDuser Basic Member

210 thumbs up

September 21, 2011

How would a team determine the effluent flow rates from residential dishwashers and clothes washing machines? Are there industry standard assumptions for the amount of water lost to evaporation when opening a dishwasher door, or the amount of water leaving a washing machine on wet clothing? Or are we to assume a conservative 1:1 supply to effluent ratio for these appliances?

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Batya Metalitz

Technical Director, LEED

USGBC

LEEDuser Expert

225 thumbs up

Mon, 11/14/2011 - 14:38

Hi Kimberly - effluent is not really a consideration, at least for the pilot credit. In order to make the process clear and simple to document, we're deferring to the ENERGY STAR specifications on dishwashers and clothes washers. We're looking at the efficiency of the machines in wash process, rather than the total process water use of the building.