Check the float switch Like a toilet, sump pumps are designed with a “float” that triggers the pump cycle. This is exactly what it sounds like: A plastic ball that floats on top of the water.

Diaphragm switches are ideal for basins that include a primary sump pump and a battery backup system since no moving parts exist. Integral snap-action float switches are suitable for smaller-diameter ...

A tethered float switch is a floating ball attached to the pump by a cord. It pivots as the water level rises, allowing a steel ball inside it to trip the switch.

Sometimes the pump can shift inside the basin, causing the float that operates the switch to lodge against its side. Debris can also be a factor--it can interfere with the action of the pump switch.

Learn more about the cost of repairing a sump pump, including maintenance and when to know it’s time to repair.

CR tested popular brands of sump pump backup systems to find the ones that will keep your basement dry in the worst weather conditions.

The Consumer Reports sump pump backup system buying guide covers the types, features, and other must-know topics about sump pump backup systems.

Local News Louisville MSD program pays for sump pump switches after heavy rains cause failures There's help if your sump pump is connected to the sewer.

With this guide, learn more about the cost of a sump pump battery backup and the factors that affect the final price you'll pay.