Most are single-flush models, though the top-rated Glacier Bay model is a dual-flush toilet, meaning you can use minimal water for most flushes. All of the models below are WaterSense certified by ...

And even in their liquid-waste setting, dual-flush toilets save little water over a capable, single-flush toilet—and can use far more if they require a second flush to completely clear the bowl.

It makes for a cleaner flush that uses less water. Pressure-assist toilets depend on water pressure to recharge, so they don’t work well in homes with low water pressure. A toilet with a dual ...