Sump pumps are used to draining out waste water from the basement of a house. These pumps are electrically driven and they are sturdy enough to run for long hours. During the time of floods and monsoon, sump pumps can work continuously to release water from the sump pits in the basement. If you install a sump pump in your basement, then you would need to dig a sump pit. The sump pit will store all the waste water from which the sump pump will drain water outside the house.
A sump pump is installed in houses that have their foundation below the water level. Sump pumps are required in places where the area is prone to flooding. Home owners keep sump pumps for precaution against flooding. During the rainy season, when the soil gets wet, water can seep through the basement damaging the house. Sump pumps are sometimes used for draining sewer lines too.