Disposal humming, leaking or backing up tonight
A disposal that is leaking into the cabinet or pushing sink water up into the dishwasher is a mess you do not want to leave until morning, and our 24/7 emergency line is open at any hour. Switch the wall switch off, then turn off the breaker so the motor cannot start. Put a bowl or towels under the leak and stop using the sink.
Never put your hand into the disposal, even when it is off, and never use tongs or a spoon with the power on. Garbage disposal repair means freeing a jam, resetting the motor, fixing the seals and hoses or replacing the unit, and the symptom tells a plumber which one it is.
What each sound or leak means
Listen and look before anything gets taken apart.
Humming, no spin
The blades are jammed. Common culprits are bone, fruit pits, a bottle cap or a spoon that slid in.
Silent, no hum
The reset button has tripped, a wire is loose, or the motor is dead. The breaker is checked first.
Leaks from the top
The sink flange seal or mounting ring has failed. This is the most common repair and often fixable.
Leaks from the side
A loose dishwasher hose or drain connection, tightened or replaced.
Leaks from the bottom
A cracked housing or failed internal seal. Replace the unit.
Smell that will not leave
Food film inside the grinding chamber or the drain trap behind it, not the motor.
A safe way to try a reset
Only if the unit is off at the switch and the breaker.
- 1
Cut power
Turn the wall switch and the breaker off. Do not rely on the switch alone.
- 2
Turn the blades by hand
Many disposals have a hex socket on the underside. A hex key lets you rock the blades back and forth to free a jam without touching them.
- 3
Remove the obstruction
Use tongs or pliers from above, never fingers. Take out whatever you can see.
- 4
Press reset
Wait a few minutes for the motor to cool, restore power, press the red reset button on the bottom, and run cold water as you test it.
Water pooling in the cabinet?
Turn the disposal off, then call the 24/7 line. A licensed plumber can help right away.
Repair or replace the disposal
Rough rules a plumber uses.
| Problem | Repair makes sense | Replace makes sense |
|---|---|---|
| Jam | Freed with hex key | Blades keep seizing |
| Top leak | Flange re-sealed | Unit is very old |
| Side leak | Hose or gasket swapped | Body is corroded |
| Bottom leak | Rarely | Almost always |
| Motor dead | Reset or wiring only | Motor burned out |
The dishwasher connection
On most kitchens the dishwasher drain hose connects to a port on the disposal. If a new disposal was installed and the knockout plug inside that port was never removed, the dishwasher will not drain. If the port is clogged with food, water backs up from the sink into the dishwasher.
Fixing it means clearing or knocking out the plug, replacing the hose clamp, or cleaning the port. If the dishwasher still backs up with the disposal cleared, the problem is further down and a drain cleaning visit can clear the branch line.
Older Covington kitchens and the drain behind the disposal
Covington's population peaked at 65,252 in 1930, and many kitchen drain lines in older homes are narrow, galvanized or cast iron with a lot of internal scale. A disposal pushes ground food into that line, and old pipe snags grease and particles. If your disposal keeps backing up, the line behind it is likely the real issue.
Covington and Newport have a combined sewer system that carries wastewater and stormwater, according to Sanitation District No. 1. Grease poured down a disposal still ends up in that system, so wipe pans before rinsing. If sewage backs up in the lowest drain in the house, see our sewer line cleaning page.
What a disposal repair bill depends on
These are the usual cost drivers.
Frequently asked questions
Yes. Our 24/7 emergency line takes calls overnight and on weekends, and same-day appointments are offered when available. Cut power at the breaker before you call.
That depends on whether it is a jam, a seal, a hose or a full replacement, plus the condition of the drain behind it. You get a clear price before work starts.
A jam is holding the blades. After switching off the power, a hex key in the bottom socket usually frees them, and the reset button restores the motor.
If it only has a loose flange or hose, yes. If the housing leaks from the bottom or the motor is burned out, a new unit is the better choice, and our plumbing installation service can set one.
Yes. Fibrous peels, coffee grounds and grease build up in the trap and branch line. A hydro-jetting visit can scour the pipe if a snake keeps leaving it half clean.
That depends on your lease and whether the unit came with the home. Ask your landlord or property manager, who can also call our line to arrange the repair.
Yes. Our Fort Mitchell service page lists how the 24/7 line covers that area.