why sump pumps fail 4

https://sumppumpfailurestlouislife.halcyonledger.com/posts/understanding-sump-pump-failure-st.-louis-common-causes-and-prevention

Sump pumps often fail because of clogs from debris or sediment, a stuck float switch, or a burned-out motor from running dry. A power outage can leave it useless, and an undersized pump may struggle to keep up during heavy rain. Over time, lack of maintenance and simple wear can corrode components or cause the check valve to jam.