Garbage Disposal Leaking? Find the Leak and Fix It

You open the cabinet under the kitchen sink and find a puddle. A garbage disposal leaking water is a common problem, and the fix depends on where the water comes from. Some leaks are a simple reseal. Others mean the disposal has worn out.

This guide shows how to find the leak, what you can check safely, and when to call a pro. For help in New Braunfels, call New Braunfels Appliance Fix at (830) 240-5230.

Why is my garbage disposal leaking?

A disposal usually leaks from one of three places. The top leak comes from the sink flange, where the disposal meets the sink. A side leak comes from the dishwasher hose or the drain pipe connection. A bottom leak comes from worn inner seals or a cracked body. Finding which one tells you whether it can be repaired or needs to be replaced.

Safety first

Turn off the disposal and unplug it, or turn off its breaker, before you put your hands under the sink. Never reach into the disposal. Keep a towel and a small bucket handy, and wear gloves if the water is dirty.

How to find the leak

1. Empty the cabinet and dry the disposal and pipes with a towel.
2. Put the sink stopper in, fill the sink with a few inches of water and add a few drops of food coloring.
3. Look at the top of the disposal with a flashlight. Colored water there means a flange leak.
4. Pull the stopper and watch the side connections as the water drains.
5. Run the dishwasher drain cycle and watch the dishwasher hose connection.
6. Check the bottom of the unit for drips or rust.

Common leak points and fixes

1. Sink flange (top)

The flange is the metal ring in the sink drain. It is sealed with plumber’s putty or a gasket. Over time the seal dries out, or the mounting bolts loosen. Tightening the mounting ring or resealing the flange often stops the leak.

2. Dishwasher hose (side)

If your dishwasher drains through the disposal, its hose connects with a clamp on the side. A loose clamp or cracked hose leaks when the dishwasher drains. Tightening or replacing the clamp or hose is a small repair. If water also shows up under the dishwasher, read our guide to a dishwasher leaking.

3. Drain pipe connection (side)

The drain pipe that leads to the P-trap connects to the side of the disposal with a gasket and flange. If the gasket wears out or the bolts loosen, water drips out every time the sink drains.

4. Disposal body (bottom)

Inside the disposal are seals that keep water away from the motor. When they wear out, water leaks from the bottom or the reset button area. A crack in the body from age or rust leaks the same way. These leaks usually mean the disposal should be replaced.

Quick guide: where is your disposal leaking?

Where it leaks	Likely cause	DIY or pro?
Top, near the sink	Sink flange seal or loose mounting	Pro or handy DIY
Side, when the dishwasher drains	Dishwasher hose or clamp	DIY check, then pro
Side, when the sink drains	Drain pipe gasket	Pro or handy DIY
Bottom of the unit	Worn inner seals or cracked body	Pro, usually replace
Only when running	Loose parts or worn seals	Pro

How much does garbage disposal repair cost in New Braunfels?

Our diagnostic visit is approx. $90–$100, and it is applied to the repair if you go ahead. Labor runs approx. $50–$95 per hour, plus parts if needed. We confirm the total with you before any work starts. Flange reseals and hose fixes are common, smaller repairs. If the body is leaking, we will tell you the cost of a new disposal so you can choose.

Prices are approximate and depend on your disposal’s brand, size, and what is needed.

Tips to keep your disposal from leaking

• Run cold water while the disposal runs and for a few seconds after.
• Keep grease, bones, and fibrous peels out. They strain the motor and seals.
• Check under the sink once a month for drips or dampness.
• Do not use harsh drain chemicals. They can damage seals and the disposal body.

The EPA’s WaterSense Fix a Leak Week page has more tips for finding leaks around the home.

Garbage disposal repair in New Braunfels

We repair and replace InSinkErator, Waste King, Moen, and most other disposal brands. We serve homes in Downtown New Braunfels, the Gruene Historic District, Landa Park, Vintage Oaks, Veramendi, and across Comal and Guadalupe Counties. Learn more about our garbage disposal repair in New Braunfels.

Not sure if other appliances need attention? Read 7 Signs Your Appliance Needs Repair (Before It Breaks Down).

Frequently Asked Questions

Why is my garbage disposal leaking from the bottom?

A leak from the bottom of the disposal usually means the inside seals have worn out or the unit has cracked. This kind of leak usually means the disposal needs to be replaced.

Why is my garbage disposal leaking from the top?

A leak at the top usually comes from the sink flange. The plumber’s putty or gasket under it can dry out or loosen. The flange can often be resealed.

Can I keep using a leaking garbage disposal?

It is best not to. Water under the sink can damage the cabinet floor and cause mold. If the leak is near the power cord or outlet, unplug the disposal and turn off the breaker.

How much does garbage disposal repair cost in New Braunfels?

Our diagnostic visit is approx. $90–$100, applied to the repair if you go ahead. Labor runs approx. $50–$95 per hour plus parts. You get the price before work starts.

Is it better to repair or replace a leaking disposal?

Leaks at the flange or the hose connections can usually be fixed. A disposal that leaks from its body or bottom is usually replaced, since the inner seals are not sold as a repair.

Get your appliance working again

Call New Braunfels Appliance Fix at (830) 240-5230 or send us a message on our contact page. We will confirm the price before any work starts.