The use of a domestic water pump can be traced back to the ancient Roman Empire, where aqueducts were used to transport water from natural sources to the cities. A small pump was used to recirculate water from the center of a reservoir on its way back to the source. This was done in order to keep the water clean, and also because it was much easier than transporting it all at once. The modern version of this system is commonly used in swimming pools, where it is employed to keep the water clean and circulating.

The most basic type of domestic water pump is installed right into a faucet. They are made up of three main components: a motor, an impeller, and a gearbox. The gearbox transfers power from the motor to the impeller, which spins a disc that forces water through the pipe. After that point, it is simply a matter of gravity as far as where the water goes—it will continue to flow down unless something gets in its way.

These pumps come in a wide range of sizes and styles, with prices ranging just as widely depending on what you are looking for. The size or price doesn’t necessarily indicate better quality or durability—you can find both high-end models and cheap ones.