Basement Maintenance Checklist: Sump Pump and Beyond
A working sump pump is your basement's last line of defense against flooding. Here's how to test it and what else to check in a basement checkup.
Why it matters
If your home has a sump pump, it's doing quiet, essential work — moving groundwater away from your foundation before it can flood your basement. A pump that fails during a heavy storm, when you need it most, can mean thousands of dollars in water damage.
How to test your sump pump
Once a year, pour a few gallons of water into the sump pit until the float rises — the pump should kick on, move the water out, and shut off cleanly. If it doesn't activate, runs continuously, or makes grinding noises, it needs attention.
Other basement checks worth doing
While you're down there, look for damp spots or efflorescence (a white, chalky residue) on foundation walls, check that your dehumidifier is running well if you use one, and make sure vents and window wells are clear of debris that could trap water against the foundation.
A backup is worth considering
Sump pumps typically fail during power outages — often exactly when storms cause the most groundwater. A battery or water-powered backup pump is inexpensive insurance if your basement has ever flooded before.