Sump Pump Not Working? Causes and Fixes

A sump pump is your basement’s first line of defense against flooding. It sits in a pit at the lowest point of your home and pumps out water before it can rise and cause damage. When a sump pump stops working, you often do not find out until water is already pooling, which is why knowing the warning signs and common causes is so important.

This guide covers why sump pumps fail, what you can check yourself, and when to call a licensed plumber, especially before heavy rain or snowmelt in Peoria.

Why a Sump Pump Stops Working

Sump pumps fail for a handful of common reasons, and many have nothing to do with the pump itself:

• A power outage, which is why a battery backup matters
• A stuck or jammed float switch that never tells the pump to run
• A clogged pit, intake, or discharge line
• A tripped breaker or unplugged unit
• An old pump that has simply worn out
• A discharge pipe frozen or blocked outside

What to Check Yourself

Start with the simple checks. Make sure the pump is plugged in and the breaker has not tripped. Then look at the float switch, the part that rises with the water to turn the pump on. If it is stuck against the side of the pit or tangled, free it so it can move up and down.

Next, pour a bucket of water into the pit to test it. A working pump should kick on, pump the water out, and shut off on its own. If it does not run, or runs but does not move water, the problem is deeper and needs a closer look.

How to Keep Your Sump Pump Ready

A little maintenance keeps your pump working when you need it most. Do these checks a few times a year, especially before the rainy season:

• Test the pump with a bucket of water every few months
• Clean debris out of the pit and the intake screen
• Check that the discharge line is clear and points away from the house
• Make sure the battery backup is charged and working
• Listen for strange noises that signal a worn motor

When to Call a Plumber

Call a licensed plumber if the pump will not run after you check the power and float, if it runs constantly without emptying the pit, if it makes grinding or rattling noises, or if your basement keeps taking on water. A failing sump pump before a storm is an urgent problem, and a pro can repair or replace it fast, plus add a backup so one outage does not flood your home.

Frequently Asked Questions

Conclusion

A sump pump only matters when water is rising, so it pays to keep it tested and ready long before the next storm. Checking the power, freeing the float, and pouring in a test bucket of water catch most problems early.

When your pump will not run, runs nonstop, or your basement keeps flooding, do not wait for the next heavy rain. Our licensed local plumbers serve Peoria, Arizona and Peoria, Illinois around the clock and can repair, replace, or add a backup to your sump pump system.