Choose high-efficiency toilets

Toilets consume more water than any other fixture or appliance.
Federal law requires that new toilets use no more than 1.6 gallons per flush (gpfGallons per flush. Measurement of water use in toilets. Since 1992, toilets sold in the United States have been restricted to 1.6 gpf or less. The standard for high-efficiency toilets (HETs) is 1.28 gpf.). That's much better than older fixtures that use up to 7. Some high-efficiency models use as little as 1.0 gpf. Dual-flush toilets offer separate flush volumes for solid and liquid waste.

Green Points

LEED for HomesLeadership in Energy and Environmental Design. LEED for Homes is the residential green building program from the United States Green Building Council (USGBC). While this program is primarily designed for and applicable to new home projects, major gut rehabs can qualify. : 2 points for using toilets with an average flow rate of 1.1 gpf or less.

NGBSNational Green Building Standard Based on the NAHB Model Green Home Building Guidelines and passed through ANSI. This standard can be applied to both new homes, remodeling projects, and additions. /ICC-700: Up to 24 points when all toilets use 1.28 gpf or less (801.6).

Learn more in the Green Building Encyclopedia


Learn more in the Green Product Guide

Residential Toilets

Further resources

EPA WaterSense program

California Urban Water Conservation Council

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