However, EPA WaterSense certified toilets use a maximum of just 1.28 gallons per flush. These innovative water-saving toilet models only flush what's necessary. As per the EPA, if all U.S. toilets ...

The toilets that meet the 1.28 gpf standard earn the EPA’s WaterSense designation. Even with those standards in place, your toilet is still the biggest water-consuming product in your home ...

Add in the 650 extra gallons per year you'll save with a WaterSense model, along with the rebate that comes with it, and you could have the cost of a new toilet covered. In fact, Consumer Reports ...