Why is my garbage disposal leaking?

Wondering where the water comes from?

Where a garbage disposal can leak, in plain English

A garbage disposal can leak at five spots: the top, two joints on the side, the bottom, or the U-shaped pipe after it. Water runs downhill, like rain down a window. So a drip from the top can end up dripping off the bottom too.

Each number matches a step below. Water runs downhill, so a drip from 1 or 2 can end up dripping off the bottom too.

The ring at the sink. The disposal hangs from a metal ring under the sink drain. Inside the sink, a rope of putty seals the drain ring. A loose ring or old putty leaks at the top.
The dishwasher hose. Have a dishwasher? Its drain hose pushes onto a little spout on the side, and a clamp holds it. A loose clamp drips when the dishwasher drains.
The drain pipe. Water and ground-up food leave through a bent pipe on the side. A small plate and bolts hold it on, with a rubber ring inside. Loose bolts or a worn ring drip when water runs.
The bottom. Inside, rubber seals keep water away from the motor. When they wear out or the body cracks, water drips from the bottom or the red reset button. That means a new disposal.
The U-shaped pipe. Then the water dips through a U-shaped pipe (the trap) on its way into the wall. Its big nuts can work loose.

Most leaks at the top and side are loose parts you can snug up for free. A worn seal takes a little more work. A leak from the bottom means the disposal is worn out inside.

The cord and the outlet usually sit right under the disposal. That's why water near them means stop. Turn off the breaker before you touch anything.

Disposal not running at all? See our guide to a garbage disposal that's not working. Water under the dishwasher instead? See a leaking dishwasher. Sink slow to drain too? See a clogged kitchen sink.

Who to call

Rather not do it yourself? Call a plumber.

That's a fine choice. Maybe you're busy. Maybe you're selling the house and just want it done right. A plumber can fix the leak or put in a new disposal.

$50–$125Fix a leaking seal

$200–$625New disposal, put in

Most plumbers charge $45–$200 an hour, and some add a fee to come out.

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What to say

Calling a pro? Here's what to say.

A few lines to read when they pick up, and the questions to ask before anyone comes out.

Before you call

Rent? Call your landlord first.

Home warranty? Call them first.

4.5 stars or more, and a license number.

Say this

Hi. My garbage disposal is leaking under the sink. When's the soonest you can get here? And what's your fee for the visit? Does it go toward the repair?

Always ask

What's your fee to come out, and does it go toward the repair?
Do you charge by the job or by the hour?
Will you tell me the full price before you start any work?

Watch out if

They push a full replacement on the first visit for a small problem.
They won't give you a price before starting.
They add an emergency fee without telling you first.

Feeling pushed to decide on the spot? You can say no and hang up. You owe nothing for a phone call.

Know what's wrong before they come

Answer up to 5 quick questions. We'll give you the words a pro uses.

Answer the questions →

More of a list person?

Common disposal leaks, causes, tests and costs

Find the row that sounds like yours. Every quick test starts with the power off.

What you notice	What it probably is	Quick test	Do it yourself	With a pro	Verdict
Water dripping onto the cord, the plug or the outlet	Water is reaching the power	Look, don't touch: is the cord or outlet wet?	Pro job	$200–$625	CALLSee the answer: Water is reaching the power
Drip at the top, where the disposal meets the sink	The ring at the sink was loose	Colored water in the sink. Is the top wet first?	Free	$50–$125	FIXSee the answer: The ring at the sink was loose
Still drips at the top, even with the ring snug	The seal under the sink drain is worn	Snug the ring, then do the colored-water test again	$0–$50	$50–$125	FIXSee the answer: The seal under the sink drain is worn
Drip where the dishwasher hose goes in, often when the dishwasher drains	The dishwasher hose clamp was loose	Tighten the clamp, then run the dishwasher	Free	$50–$180	FIXSee the answer: The dishwasher hose clamp was loose
Drip where the drain pipe meets the disposal	The drain pipe bolts were loose	Snug the bolts, then run water for a minute	Free	Not needed	FIXSee the answer: The drain pipe bolts were loose
Drain pipe joint still drips with the bolts tight, or the pipe is cracked	The rubber ring at the drain pipe is worn	Bolts tight, run water: still dripping?	$0–$10	$50–$100	FIXSee the answer: The rubber ring at the drain pipe is worn
Drip at a big nut on the U-shaped pipe	A nut on the U-shaped pipe is loose	Paper towel around each nut, then drain the sink	Free	$45–$200	FIXSee the answer: A nut on the U-shaped pipe is loose
Drips from the bottom or the red reset button. The top stays dry	The disposal is worn out inside	Paper towel at the top and the bottom. Only the bottom gets wet	Pro job	$200–$625	CALLSee the answer: The disposal is worn out inside
Water starts under or beside the dishwasher	The dishwasher is leaking, not the disposal	Paper towels by the dishwasher, then run it	Free	Not needed	FIXSee the answer: The dishwasher is leaking, not the disposal
Drip at the faucet hoses, the sprayer hose or the small water valves	Something else under the sink is leaking	Paper towels around the hoses and valves, then run the faucet	Pro job	$45–$200	CALLSee the answer: Something else under the sink is leaking
Water once in a while. The tests show nothing	A splash or a drip from above, not a leak	Paper towels under the sink for a few days	Free	Not needed	FIXSee the answer: A splash or a drip from above, not a leak

2026 U.S. averages, rounded. Pro prices include parts and labor. Most plumbers charge $45–$200 an hour, and some add a fee to come out. Nights, weekends and big cities cost more. See all repair prices

Want proof where it's leaking?

The colored-water test

This test shows you the exact spot. InSinkErator, Mr. Rooter and Bob Vila all use a version of it. You need food coloring, paper towels and a flashlight.

Power off. Turn the disposal's switch off and unplug it. Plug wet? Turn off its breaker instead.
Dry everything. Wipe the disposal and the pipes. Lay paper towels flat under it all.
Fill the sink. Put the stopper in. Add a few inches of water and a few drops of food coloring.
Watch it sit, then drain. Wait 5 minutes with a flashlight. Then pull the stopper and watch again.
Dab each spot. Touch a dry paper towel to the top, the sides and the bottom. Leaks only when the dishwasher runs? Run it and watch instead.

Color at the top: the ring at the sink is loose, or the putty under the drain ring is worn.
Color on the side: the dishwasher hose clamp, or the drain pipe's bolts or rubber ring.
Color only at the bottom or the reset button: the disposal is worn out inside. Make sure the top is dry first.
Color at the U-shaped pipe: one of its big nuts is loose.
No color anywhere: it may not be the disposal. Check the faucet hoses, the dishwasher and the counter above.

Not sure it's safe to keep using?

Turn it off right away if…

Water is on the outlet, the plug or the cord. Don't touch them. Turn off the disposal's breaker first.
Water drips from the bottom or the red reset button. Water is getting inside, near the motor.
The breaker or the outlet keeps tripping.
You smell burning or see smoke. Turn off its breaker too.
Water is spraying, not dripping, from a hose or valve. Shut off the main water valve.

Then put a bucket under it and stop using the disposal until it's fixed. And never put your hand inside a disposal, even with the switch off.

Got a big repair quote?

Fix the leak, or get a new disposal?

Where it leaks decides it. Leaks at the top and side are usually loose parts or a worn seal, and they're worth fixing. A leak from the bottom means a new disposal. The Home Depot, Bob Vila and Mr. Rooter all say so.

Top or side? Snugging the ring, the clamp or the bolts is free. A plumber's seal fix is about $50–$125 (Bob Vila), and Fixr says $60–$100.
Bottom or reset button? Plan on a new disposal. Most people pay $200–$625 installed, and the average is about $550 (HomeAdvisor).
Under warranty? Find the brand and model on the sticker on the side. Contact the maker first.
How old is it? Disposals usually last 8 to 15 years, Bob Vila says. An old one that leaks is near the end.
The half rule. If a repair costs more than half the price of a new disposal installed, replacing usually makes more sense.

Example: a $90 seal fix at the top is worth it. A quote to "reseal" a disposal that drips from the bottom isn't. That one needs replacing.

Ran into a word you don't know?

Disposal leak words, explained

Tap through these before you look under the sink. The drawings show roughly what each part looks like.

Garbage disposal: The grinder under your kitchen sink drain. It turns food scraps into tiny bits that wash down the pipe.
Mounting ring: The metal ring under the sink that the disposal hangs from. It has three screws. Pros call it the mounting assembly.
Sink drain ring (sink flange): The shiny metal ring in the bottom of the sink, where food goes down. A rope of putty seals it to the sink.
Plumber's putty: A soft, clay-like seal that you roll into a rope. It goes under the sink drain ring.
Dishwasher hose: The thin, ribbed hose that carries dirty dishwasher water into a small spout on the side of the disposal.
Hose clamp: A metal band that squeezes a hose onto its spout. Some tighten with a screw. Others are springs you squeeze with pliers.
Knockout plug: A plastic plug inside the dishwasher spout of a brand-new disposal. It has to be knocked out if you have a dishwasher.
Drain pipe (discharge tube): The bent pipe that carries water out the side of the disposal. A small metal plate and bolts hold it on.
Rubber ring (discharge gasket): The flat rubber ring that seals the drain pipe where it goes into the disposal.
Trap (P-trap): The U-shaped pipe under the sink. It holds a little water to keep sewer smells out.
Slip nuts: The big plastic or metal nuts on each end of the U-shaped pipe. A flat ring inside each one seals the joint.
Inner seals: Rubber seals inside the disposal that keep water away from the motor. You can't reach or replace them.
Reset button: A small red button on the bottom of the disposal. Water coming out here means water is inside.
Faucet hoses (supply lines): The two thin hoses that carry hot and cold water from the valves up to the faucet.
Shutoff valves: The two small water valves under the sink, one for hot and one for cold. Turn them to the right to close them.
Breaker: A safety switch in your breaker box (the gray metal panel). Turning off the disposal's breaker cuts its power.
Outlet reset button: An outlet with TEST and RESET buttons that cuts power if it senses water. Pros call it a GFCI outlet.
Colored-water test: A few drops of food coloring in a full sink. Colored drips show you exactly where it leaks.

Still have questions?

Questions people ask most

Is a leaking garbage disposal an emergency?

A slow drip from a garbage disposal isn't an emergency, but water on its outlet or plug is. Don't touch the plug. Turn off the disposal's breaker first. Then put a bucket under it and stop using it until it's fixed (Safe Electricity, Bob Vila).

Why is my garbage disposal leaking from the bottom?

A garbage disposal that leaks from the bottom has worn-out seals inside, or its body has cracked. Mr. Rooter says those inner seals wear out with time. But check first that water isn't running down from the top. InSinkErator says to rule that out before anything else.

Can you fix a garbage disposal leaking from the bottom?

No, a garbage disposal that leaks from the bottom has to be replaced, The Home Depot says. Bob Vila and Mr. Rooter agree. Under warranty? Contact the maker first. InSinkErator says to call its support about a bottom leak.

Why is my garbage disposal leaking from the top?

A garbage disposal that leaks from the top has a loose ring where it hangs from the sink, or a worn seal under the sink's drain ring. With the power off, turn the disposal to the right until it stops and snug the three screws (InSinkErator). Still leaking? The putty under the drain ring needs redoing (Mr. Rooter, Bob Vila).

Why is my garbage disposal leaking from the reset button?

Water coming out of the reset button means water is getting inside the bottom of the disposal, where the motor is. Unplug it, or turn off its breaker, and stop using it. Bob Vila says a leak near the reset button means it's time to replace the disposal.

Why is my garbage disposal leaking when the dishwasher runs?

A garbage disposal that leaks only when the dishwasher runs points to the joint where the dishwasher hose goes in. Tighten the clamp on that hose. InSinkErator also says to check the hose adapter and the joint at the U-shaped pipe. Water can run down from that hose and drip off the bottom, so check it before you replace anything.

Why is my new garbage disposal leaking?

A brand-new garbage disposal that leaks points to how it was put in, not a worn part. InSinkErator says to check three things. Is the ring turned all the way to the right? Are the three screws tight? Is there too much putty under the sink's drain ring? Then check the drain pipe's bolts and rubber ring. If a plumber or a store put it in, call them first.

Can I still use my garbage disposal if it's leaking?

Don't run a leaking garbage disposal until it's fixed. Water can get into the motor and the wiring. Fixr says water-damaged motor or electrical parts can mean a whole new disposal. Keep a bucket under it, and use the sink as little as you can.

How much does it cost to fix a leaking garbage disposal?

A leaking garbage disposal costs about $50–$125 to fix when a seal or a rubber ring is the problem (Bob Vila, and Fixr says $60–$100). A new disposal, installed, is about $200–$625, and the average is about $550 (HomeAdvisor). Tightening a ring, a clamp or a bolt costs nothing.

Who do I call for a leaking garbage disposal?

Call a plumber for a leaking garbage disposal. Try the free checks first: the colored-water test, then snug the ring, the hose clamp and the drain bolts. Under warranty? Contact the maker first. Renters should call their landlord. If the outlet got wet or keeps tripping, call an electrician too.

How we built this

The questions follow the order a plumber checks a leaking disposal: power off and find the first drip, make sure a bottom leak isn't running down from the top, then the ring at the sink, the dishwasher hose, the drain pipe, and the pipes nearby. Each answer makes some causes more likely and others less likely.

Prices are 2026 national averages from published repair-cost guides, rounded. Your local prices will differ.

How we make money: some links go to parts stores that pay us a small commission, and some pro listings pay us when you call them. Verdicts come from the diagnosis, not from who pays more.