Sump Pump Maintenance Before Storm Season

Kansas City gets hit hard by spring storms. Between March and June, the metro averages some of the heaviest rainfall of the year — and for homes with basements, that means your sump pump is the only thing standing between a dry floor and a very expensive water damage claim.

The problem is that most homeowners never think about their sump pump until it fails. And it almost always fails during the worst possible time — the middle of a heavy rainstorm when the pit is filling fast and there's nothing you can do about it.

Here's how to check yours now, before storm season starts, so you're not making an emergency call at 11pm in April.

How a Sump Pump Works

Your sump pump sits in a pit (the sump basin) at the lowest point of your basement or crawl space. When groundwater rises and fills the pit to a certain level, a float switch triggers the pump to kick on and discharge the water away from your foundation through a drain line.

Most residential sump pumps are either submersible (mounted inside the pit, fully submerged) or pedestal (motor mounted above the pit, intake at the bottom). Both types are common in Kansas City homes and both require the same basic maintenance.

Step-by-Step: How to Test Your Sump Pump

Step 1  Find the sump pit

It's usually in a corner of your basement floor, covered by a lid (sometimes a plastic cover, sometimes just a piece of plywood). Remove the cover and look inside — there should be a pump sitting in the pit, a float device, and a discharge pipe running up and out of the pit.

Step 2  Check the power

The pump plugs into a standard outlet. Make sure it's plugged in and the outlet has power. This sounds obvious but it's the first thing to verify — a tripped breaker or unplugged cord is a surprisingly common reason pumps fail when they're needed.

Step 3  Pour water into the pit

This is the simplest way to test it. Grab a 5-gallon bucket, fill it with water, and slowly pour it into the sump pit. The float should rise, trigger the pump to turn on, and the water should be discharged. The pump should turn off shortly after the water level drops. If any of that doesn't happen, you have a problem.

Step 4  Check the discharge line

Follow the discharge pipe from the pump to where it exits your home. Make sure it's draining at least 10–20 feet away from your foundation — water discharging too close to the house can cycle right back into the pit. Also check that the exterior end isn't blocked by dirt, debris, or ice.

Step 5  Inspect the float switch

The float switch is what tells the pump when to turn on and off. Lift it manually and confirm it moves freely — floats can get stuck against the side of the pit or tangled in the power cord. A stuck float means your pump either won't turn on (basement floods) or won't turn off (motor burns out).

Step 6  Clean out the pit

Debris, gravel, and sediment accumulate in the pit over time and can clog the pump intake. With the pump unplugged, scoop out any visible debris. Rinse the pit and pump casing with clean water if there's significant buildup.

Warning Signs Your Sump Pump Needs to Be Replaced

Testing your pump is step one. But sometimes the pump passes a basic test and still fails when it really counts. Here are the signs that point to replacement rather than just maintenance:

• Age over 7–10 years. Most sump pumps last 7–10 years with normal use. If yours is approaching or past that mark, replace it proactively — don't gamble on it lasting another season.
• Runs constantly or cycles on and off rapidly. This usually means the float switch is stuck, the pump is undersized for your pit, or there's a plumbing issue causing water to recirculate.
• Visible rust or corrosion. Surface rust on the casing isn't always a crisis, but rust on the components or heavy corrosion on the discharge connection means the pump is deteriorating from the inside.
• Unusual noises. A grinding or rattling sound during operation typically means the impeller (the part that moves water) is damaged or debris is caught in the intake.
• It ran dry for an extended period. Sump pumps can burn out if they run without water — this sometimes happens if a float switch sticks in the "on" position during a dry spell.
• You had basement water last season. If your basement took on water during a storm even with the pump running, the pump is undersized, failing, or your drainage system has another issue.

Should You Have a Backup Sump Pump?

Kansas City storms don't wait for convenient timing. One of the most common scenarios we see is a power outage during a heavy storm — the exact moment your sump pump needs to be working. A battery backup sump pump sits in the same pit as your primary pump and kicks in automatically when the power goes out or when the primary pump can't keep up.

If your basement has finished living space, a home office, or anything of significant value, a battery backup is worth every penny. The cost of one flooded basement almost always exceeds the cost of installing a backup system.

When to Call a Plumber

If your pump fails the pour test, makes unusual noises, is visibly corroded, or is over 10 years old — call a plumber before the first big storm of spring. A sump pump replacement is a straightforward job and the cost is significantly less than water damage remediation.

At Poor John's, we install and service sump pumps across the Kansas City metro — both Missouri and Kansas. We'll tell you upfront what it costs before we start, and we won't upsell you to a system bigger than you need.

The Bottom Line

Your sump pump is one of the most important systems in your home and one of the most neglected. A 10-minute test once a year — ideally right before storm season — can save you from thousands of dollars in water damage and the headache of a flooded basement.

Test it now. If it fails, replace it now. Kansas City storm season won't wait.