Many water-efficient, low-flow toilets ace CR's tough lab tests, where we flush everything from plastic balls to soaked ...

Today, U.S. federal law demands that all toilets manufactured in the U.S. use 1.6 gallons per flush maximum. However, EPA WaterSense certified toilets use a maximum of just 1.28 gallons per flush.

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 ...