When a sump pump fails during a storm
Failures tend to come with the heaviest rain, and that is exactly when you need help. Our 24/7 line takes sump pump calls at night and on weekends. While you wait, move belongings off the floor, keep clear of any outlet near standing water, and do not touch the pump if the pit is full and the cord is live.
A sump pump sits in a pit at the lowest point of the basement and pushes groundwater out through a discharge pipe. Plumbers diagnose it by watching what the float, the motor and the check valve do when the pit fills.
Pump silent, humming or never switching off?
A pump that hums without pumping, runs all day, or stays quiet while the pit overflows has one of a handful of faults. Most trace to the float switch, a clogged intake, a failed motor or a check valve that lets water fall back.
The technical name for the fix is sump pump repair or replacement, and a plumber decides between the two after testing the unit and the pit.
Why sump pumps stop working
Stuck float switch
The float can jam against the pit wall, so the pump never starts or never shuts off.
Clogged intake
Silt and gravel clog the screen under the pump and make it run hot and weak.
Burned-out motor
A pump that runs constantly for years wears out. An older unit is more likely to fail, so age is worth mentioning when you call.
Failed check valve
A check valve stops water sliding back into the pit. If it fails, the pump cycles over and over.
Blocked or frozen discharge
Ice or a crushed outside pipe traps the water, and the pump strains with nowhere to send it.
Power loss
Storms often knock out the electricity, and a plugged-in pump stops the moment the grid does.
Rain is coming faster than the pump
Call the 24/7 line for a sump pump that has stopped or cannot keep up.
Test your pump before the rain
Do this when the weather is dry and you have ten minutes.
- 1
Look at the pit
Clear leaves, sand and debris, and make sure the float can rise freely.
- 2
Add water
Slowly pour a few gallons of water into the pit until the float lifts.
- 3
Watch the cycle
The pump should start, empty the pit and shut off cleanly without chattering.
- 4
Check the outside end
Make sure water leaves the discharge pipe and drains away from the foundation.
Battery backup and why power matters
The usual reason a sump pump fails during a storm is simple: the power goes out. A battery backup pump, set slightly higher in the pit, takes over when the main pump quits or the electricity drops.
Backups run for hours, not days, so size the battery to the storm, and test it every few months. If you are weighing options, ask about a water-powered unit and a high-water alarm too.
A backup in the floor drain is not a sump problem
Older areas of Covington have a combined sewer that carries wastewater and storm water in the same pipe, and SD1 says overflows can back up into basements. A sump pump moves groundwater from the pit, so it cannot stop sewage coming up a floor drain. If the water is dirty or smells, see sewer line cleaning and call SD1 as well.
Discharge lines and where the water goes
The pump is only as good as its discharge. The pipe should carry water well away from the foundation, slope downhill, and end where it will not freeze shut or flow back toward the house.
Never connect a sump discharge to a sanitary sewer drain. In an area with a combined sewer, that adds clear water to a system that already overflows, so ask a plumber or the local inspector what is allowed.
Repair or replace the pump?
| Situation | Usual answer | Why |
|---|---|---|
| Stuck float, clean pump | Repair | Switch or float assembly can be swapped |
| Failed check valve | Repair | Valve is a separate low-cost part |
| Burned-out motor | Replace | Motor repair rarely pays off |
| Pump that is old or of unknown age | Replace | Wear makes another failure likely |
Sump pumps in the Ohio and Licking river valleys
Covington sits where the Ohio and Licking Rivers meet, and the 1937 flood crested at a record 80.0 feet at Cincinnati against a flood stage of 52. Homes near the rivers and in low areas can see a high water table in wet seasons, which is why a working pump and a backup matter.
A pump cannot stop river flooding. It handles groundwater that seeps in through the floor and walls, so if your basement has a recurring problem beyond the pit, ask about interior waterproofing. Towns along the Ohio, such as Ludlow, share that river-valley setting.
What affects sump pump repair cost
Frequently asked questions
Yes. The 24/7 line takes sump pump calls whenever the rain comes. Move valuables up, avoid wet outlets and call, and a licensed plumber can plan the repair or replacement.
The pump may be undersized, clogged or sitting in a pit that is too high to catch the water. Dampness without standing water can also come from outside drainage, which is where basement waterproofing comes in.
Usually a stuck float, a failed check valve or an unusually high water table. A plumber tests each, and may recommend replacing an old pump.
It depends on whether the fix is a part or a new pump, the type of pump, the condition of the pit and discharge, and the time of day. You get a clear price before work starts.
No. A sump pump moves groundwater. Sewer backups in a combined sewer area are a different problem. Call SD1 for the public line, and a blocked private line can be cleared by a plumber.
Tell your landlord right away, since the pump is usually the owner's equipment. Owners and managers can call the 24/7 line for same-day appointments when available.