How to Test Your Sump Pump (Before the Next Big Storm)

Your sump pump sits in a pit doing nothing until water arrives. That's how it should work. The problem: if the pump dies during the dry months, you won't know until water is already coming in.

The 2-minute test

1. Find your sump pit (basement or crawlspace, often near the foundation wall)
2. Lift the lid
3. Pour 5 gallons of water into the pit
4. Watch: the float should rise, the pump should kick on, water should pump out, the pump should shut off when the pit is empty

What to watch for

• Pump doesn't turn on — float stuck, motor dead, or no power
• Pump runs but doesn't pump water — impeller jammed or check valve issue
• Pump runs continuously — check valve failed, pumping the same water in circles
• Loud grinding — debris in the pump or worn impeller
• Pump struggles or trips breaker — motor going

Battery backup check

If you have a battery backup, unplug the primary pump and run the test again. The backup should activate. Battery backups need their batteries replaced every 3-5 years.

Service intervals

Test every 3-4 months. Replace the primary pump every 7-10 years even if it's still working — they fail without warning.