A sump pump is a relatively simple device that operates on a basic principle: : 1. **Water collection:** Water seeps into your basement or crawlspace through the foundation walls or floor. .2. **Level detection:** As the water level rises in the pit, it triggers a float switch.3. **Pump activation:** The float switch turns on the pump.4. **Water removal:** The impeller draws water and expels it.5. **Water discharge:** Water is diverted away.6. **Pump deactivation:** The system stops operating once the water is removed. This cycle repeats as needed, ensuring your basement stays dry.