why sump pumps fail 5

https://sumppumpfailurestlouishaven.juniperbrief.com/posts/understanding-sump-pump-failure-in-st.-louis-causes-and-prevention

Sump pumps often fail because of clogs from debris or sediment jamming the impeller, or because the float switch gets stuck, preventing the pump from turning on when water rises. Power issues, like tripped breakers or bad wiring, are common too. Over time, overheating from continuous use or a worn-out motor can lead to failure.