How often should you test a sump pump?
Every month.
Only some homes need this one. It is optional on the checklist and starts switched off in the tracker.
How to do it
Pour a bucket of water into the pit and check the pump starts, empties it and shuts off.
Why it matters
You find out a sump pump has failed during the storm that needed it.
Recommended interval: every month, per Liberty Pumps.
General guidance for a typical home; the manufacturer's instructions come first.