The power goes out, a heavy rain overwhelms the pump, someone mistakenly trips over the cord, unplugging it.
These are just a few reasons a sump pump could fail.
To prevent flooding as a result of a sump pump failure, consider having a TripleSafe sump pump installed. The TripleSafe pump includes three pumps in one liner to make sure the pump is always working, even when one fails.
The second pump is more powerful than the primary one. It kicks in if the primary pump fails. The third pump is battery-operated, ensuring the pump continues working even if the power is out.