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Savings From Water-Efficient Toilets

The EPA’s WaterSense program estimates that if a family of four replaces older toilets with WaterSense labeled toilets, they can save about $1,000 in water bills over 10 years. For more information on water-efficient toilets, check out Best Options for High-Efficiency Toilets.


Toilet Type


Daily Water Use*


 Annual Water Use*

Conventional (3.5 gpf)  17.5 6,387
Single-flush (1.6 gpf)  8.0 2,920
Dual-flush (1.6 gpf)  4.8 1,752
Pressure-assist (1 or 1.6 gpf)  4.8 to 8.0 1,752 to 2,920

*gallons per person 

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