The tankless toilet can be a great choice for a small bathroom due to the fact that these toilets don’t have a tank! Whereas traditional toilets with a tank store water for the flush in the tank, the tankless toilets rely on the house water supply to furnish a large volume of water for a flush. Some tankless toilets are designed with a pump to pull water from the home’s water system. The tankless toilets are sleek one-piece designs that look at home in any decor. We’ve reviewed a few of the best tankless toilets you can buy today.