WE Credit 3.2: Water Use Reduction: 30% Reduction
1 Point in addition to WE Credit 3.1
Intent
Maximize water efficiency within buildings to reduce the burden on
municipal water supply and wastewater
systems.
Requirements
Employ strategies that in aggregate use 30% less water than the
water use baseline calculated for the building
(not including irrigation) after meeting the Energy Policy Act of
1992 fixture performance requirements. Calculations
are based on estimated occupant usage and shall include only the
following fixtures (as applicable to
the building): water closets, urinals, lavatory faucets, showers and
kitchen sinks.
Potential Technologies & Strategies
Use high-efficiency fixtures, dry fixtures such as composting
toilets and waterless urinals, and occupant sensors
to reduce the potable water demand. Consider reuse of stormwater and
greywater for non-potable applications
such as toilet and urinal flushing, mechanical systems and custodial
uses.
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