why sump pumps fail 22
https://sumppumpfailurestlouispoint.raidersfanteamshop.com/what-causes-sump-pump-failure-in-st-louis-a-homeowner-s-guide
Sump pumps usually fail because the float switch gets stuck or the motor burns out from running too often, but a common hidden cause is a power cord that can't reach the outlet, forcing an extension cord that trips the breaker. Debris clogs the intake screen, or the unit simply gets old and the seals leak. Most people don't test them until a heavy rain, and by then it's too late.