A sump pump assembly with a basin, a first shelf fixedly position in a lower end of the basin, a lid for securing to an upper end of the basin, the lid having a transparent window for viewing a water level in the basin, a light mounted within the basin for assisting in viewing the water level, a first pump positioned on a floor of the basin, a second pump positioned on the first shelf, and an alarm for notifying a building owner when the first pump ceases to operate but prior to operation of the second pump. Alternative embodiments comprise a battery-powered third pump, a battery for powering the third pump, and a mount for mounting the battery inside the basin.