What is the most common reason a sump pump fails 15

https://sumppumpfailurestlouisnest.novacrestiq.com/posts/understanding-sump-pump-failure-st.-louis-homeowners-face-most-often

The most common reason a sump pump fails is a stuck or jammed float switch, which controls when the pump turns on and off. Over time, debris, sediment, or rust can build up around the switch, preventing it from moving freely. This often leads to the pump either running continuously, burning out the motor, or not turning on at all, causing basement flooding during heavy rain.