HET toilets: HET stands for high-efficiency toilets. These toilets with a 1.28 gallon flush use 20 percent less water than low-flow toilets. Currently the states of Texas and California require the use of high efficiency toilets.
Dual flush toilets: Although the concept has been around for at least 20 years, dual flush toilets are becoming more popular. Using two buttons or a two directional handle, these toilets allow you to use half the amount of water when flushing liquids only. A full flush is available for flushing solids. Devices that can convert 3.5 or 1.6 gallon toilets to dual flush are available from AquaPro Solutions LLC and Aquanotion Ltd. The conversion devices are affordable and a great solution for the green conscious consumer.
Pressure-assisted toilets: Using the pressure from your house’s water supply system, this toilet flushes with as much as three times the force of a conventional gravity flush toilet. One advantage to the pressure-assisted toilet is the short duration of the flush sound.
Power-assisted toilets: These use an electric pump to move water and waste from the bowl. These toilets have no need for the conventional tank behind the toilet. Currently these toilets are priced in the thousands of dollars and, therefore, impractical for most of us.