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The Bucket Test, and How to Read It

One minute, one bucket, and four possible outcomes that mean four different things.

The gist

The bucket test is FEMA’s: pour water into the pit until the float rises, and watch. It proves the float, the motor and the discharge line in about a minute. It does not prove the pump can keep up with a storm, or that power will be there when one arrives.

Source: FEMA, Maintain your Sump Pump.

Pit and Pump is a referral service, not a contractor. We connect homeowners with independent contractors. Contractors are required to hold whatever credential their state or municipality demands, and a discharge connection is usually a permitted alteration — ask to see the permit. We carry out no work, we sell no equipment, we do not set prices, and we never charge homeowners anything — the contractors in our network pay us when we route them a call.

The test

Pour a bucket of water into the pit and watch. FEMA describes exactly this, and the reason it is the right test is that it exercises the float — the moving part — rather than the motor alone.

Lifting the float by hand starts the pump and proves nothing about whether the float would have risen on its own. Water proves both.

Source: FEMA, Maintain your Sump Pump.

Reading the result

What happens	What it means
Starts, clears the pit, stops	Working. Note the date.
Does not start	Float, switch or power. Check the breaker and the plug before anything else.
Runs but the level does not drop	Impeller, a blocked inlet screen, or a blocked discharge line.
Starts and stops repeatedly	Water returning down the discharge pipe, or a float set too low.
Starts but will not stop	Float stuck up, or the pit is genuinely refilling as fast as it empties.

Only two of those five need a contractor, and the two simplest to put right are the two people most often replace a whole pump over.

When to run it

Twice a year is a reasonable habit, and the useful timing is not calendar-based: test it before the wet season where you live, not during it. A pump that fails its test in August is an appointment. The same pump failing in the first storm of the spring is a flooded basement and whoever can come out today.

Where to go next

Done the bucket test?If the pump ran and cleared the pit, you may not need us at all. If it did not, or if you want the discharge looked at, we will route you to somebody who covers your area — the ZIP code is all we need to find them. Free to you. The line is not restricted to sump work; any plumbing job can go through it.

Call (888) 515-3188