Resource
How to Test a Sump Pump
A five-minute test that beats finding out during a storm.
Quick answer
To test a sump pump, pour a bucket of water into the pit until the float rises — the pump should switch on, pump the water out, and shut off on its own. That's the whole test, and you should do it quarterly. Never wait for a storm to discover the pump doesn't work.
Here's how to do it right, and what to do if it fails.
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Step-by-step test
- Confirm the pump is plugged in and the breaker is on
- Lift the lid (if accessible) and look for debris in the pit
- Slowly pour 5 gallons of water into the pit until the float lifts
- Watch: the pump should turn on automatically
- Confirm it pumps the water out and shuts off on its own
- Check outside that water exits the discharge well away from the foundation
- If you have a backup, unplug the primary and repeat to test the backup
What a failed test means
If the pump doesn't start, the float may be stuck, the switch may be bad, or the unit may have lost power or failed. If it runs but doesn't move water, the impeller may be jammed or the check valve may be stuck. If water doesn't exit outside, the discharge may be clogged or frozen.
Any of these is fixable — but don't leave it until the next storm.
When to call a pro
If the test fails, or the pump sounds rough, get it checked. We diagnose the real cause rather than guessing at parts. Call (207) 419-2600.
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What Homeowners Say
A few illustrative examples of the basement-water problems we help solve across the Littleton area.
Our sump pump quit during a spring storm and the basement started taking on water. They walked us through what to do, got out quickly, and replaced the pump with a backup. Dry ever since.
We were finishing our basement and wanted to do it right. They sized a system for our clay soil, added a battery backup, and ran the discharge well away from the house. Clear estimate, clean work.
The discharge line kept freezing every winter. They re-routed it below the frost line and the problem is gone. Friendly, local, and they explained everything.
Our older home always smelled musty downstairs. They found water wicking up where the wall meets the floor, put in a proper pit and pump, and the smell is finally gone.
I got three quotes, and theirs was the only one that actually explained what I was paying for. No pressure, tidy work, and they tested everything before they left.
The pump was cycling every couple of minutes and driving us crazy. Turned out the pit was undersized. They fixed it right and showed me how to test it myself.
Reflective of the homeowners we help across the Littleton area.
Frequently Asked Questions
Protect Your Basement Before the Next Storm
Get professional sump pump help from a local Littleton specialist. Clear, upfront estimates and careful, clean workmanship.
Available by appointment. Emergency sump pump help available.