What you will notice
A sump pump sits in a pit in the basement floor. Water from the drain around your foundation flows into the pit. When the water rises, a float turns the pump on and it pushes the water outside.
Signs it is working too hard:
It runs every minute or two
You hear it start and stop over and over.
It never stops
The motor hums for long stretches without shutting off.
It runs in dry weather
Weeks after the last rain or melt, it still cycles.
The pit stays full
The pump runs but the water level barely drops.
Water rushes back in
The pit refills right after the pump shuts off.
New noises
Grinding, rattling or a pump that hums but moves no water.
Water on the floor near the pit
The pit overflows or the line leaks.