USGBC LEED-Green-Associate Question Answer
What plumbing fixture eliminates water use?
Ultrasonic toilet
WaterSense labeled toilet
Low-flow lavatory
Composting toilet
Acomposting toileteliminates water use by not requiring any water for flushing, unlike traditional or low-flow fixtures:
“Composting toilets… operate without water use, thus eliminating indoor water demand for flushing.”
WaterSense toilets and low-flow lavatories reduce water use but do not eliminate it.
TESTED 24 Feb 2026
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