A sump pump is a relatively simple device that operates on a basic principle: : 1. **Water collection:** Water enters the sump basin.2. **Level detection:** As the water level rises in the pit, it lifts a float attached to a switch.3. **Pump activation:** The float switch turns on the pump.4. **Water removal:** The pump's motor drives an impeller, which creates suction, drawing water into the pump and pushing it out through the discharge pipe. .5. **Water discharge:** Water is diverted away.6. **Pump deactivation:** Once the water level in the sump basin drops below a certain level, the float switch deactivates, turning off the pump. This cycle repeats as needed, ensuring your basement stays dry.