Abstract: A backup pump system has a frame member adapted to be securely attached to a structure. A pump member securely attached to the frame member and adapted to pump water. A water sensing device securely attached to the frame member and adapted to sense water and send electronic signals to the pump member. A battery member adapted to provide electric power to the water sensing device and the pump member; and electric wiring connected between the battery member, the water sensing device, and the pump member, such that when water reaches a predetermined level and is sensed by the water sensing device, the water sensing device sends an electronic signal to the pump member to turn on and begin pumping water using power provided by the battery member.