Toilet With Tank Above . An upflush toilet is also known as a macerating toilet. Toilet cost | types of toilet flanges | types of toilet seats | toilet stores online | toilet brands | types of toilets. Japan sink built above the toilet tank for hand washing saves water from starecat.com Shop sustainable products now available on the rise store! By using a toilet sink combo, it means every time you use the toilet you will save at least 1 gallon of water. The toilet bowl and the toilet tank.