Garbage Disposal Leaking from Weep Hole (Cause & Quick Fix)

Regardless of where the garbage disposal leaks, it will always make the house uncomfortable. However, it is even worse when you don’t know where the leak originates. 

In this article, we will discuss garbage disposal leaking from the weep hole, a topic rarely discussed but of great importance, as we will see. The best part is to examine the causes of the weep hole leaks and how you can fix the problem altogether. 

But before that;

What is a Garbage Disposal Weep Hole?

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A garbage disposal weep hole is a tiny hole at the top side of the garbage disposal drainage pipe, basically for water drainage. It prevents leaks when you are using the garbage disposal. 

Despite being at the topmost part of the garbage disposal drainage pipe, it rarely leaks. On the contrary, it prevents constant leaks.

What Causes a Garbage Disposal to Leak from the Bottom/ Weep Hole?

There are a couple of reasons a garbage disposal leaks from the bottom. The first is that the internal garbage disposal seal could be faulty, and the second is a leaking weep hole. Let’s talk about a leaking weep hole;

Usually, water and garbage will not even get to the weep hole. I mean, the water passes through to the drainage pipes naturally. Therefore, leaks cannot be from the weep hole unless there is a more profound challenge.

Technically, the weep hole leaks due to a fault with the drainage pipe. When there is too much water pressure, it causes the drainage pipes to crack or burst at some point. Or, there could be a blockage in the pipes, preventing water from flowing naturally.

How to Fix Garbage Disposal Leaking from the Weep Hole

If your garbage disposal is leaking from the weep hole, there is no cause for worry. Here is a summary table on how to solve the problem;

Cause Solution
Blocked drainage pipesUnblock the pipes
Cracked drainage pipesReplace the pipes
Burst drainage pipesReplace the pipes

How to Fix Blocked garbage Disposal Drainage, Pipes

First, unplug the garbage disposal from the drainage pipes. You can use your hands, but a screw will help if the connection is too tight for your hands. Next, ensure that the water tap is turned off to prevent water from splashing on the floor.

Unblock the pipe using hot water, which you will run through the pipe. Then, use a commercial cleaning product that is pipe-friendly. 

If you don’t have the cleaning product, you can make one at home using vinegar and soda. Allow the homemade or commercial cleaner to run and fizz through the pipe for a couple of minutes, diluting any dirt left in the pipe.

Then, run water through the pipe to rinse it.

Put the pipe back on the garbage disposal and tighten it. You can as well use a screwdriver to ensure that it is securely set.

Finally, turn on the water tap and let the water run freely into the garbage disposal. If the drainage pipe blockage was the challenge, the leaking should stop. Therefore, the weep hole is no longer a threat to your kitchen safety.

How to Fix Cracked or Burst Garbage Disposal Drainage Pipes

If the garbage disposal drainage pipes burst or crack under the water pressure, the only solution is to get new ones for replacement. While calling a professional plumber is an excellent and sure option, doing it yourself helps you gain more skills and save a few bucks. 

Therefore, you can use the DIY below for a more informed fixing task;

Firstly, you should remove the damaged drainage pipe from the garbage disposal. You can consider using a screwdriver or pliers for a smooth loosening of the pipe.

Wait, before removing the pipe, ensure that you get a drainage pipe that is the same size as your existing pipe. 

If possible, get one from the same company and with the same number. This will assure you that it fits into your garbage disposal. If you don’t get one, get the number and photo of the drainage pipe and take it with you to the hardware. They will get you a matching replacement if they have one.

A too small or too large pipe will cause leaks through the weep hole again, and you will not have solved the problem.

Now, unwrap the new drainage pipe and connect it to the garbage disposal. Tighten it until you feel the resistance. Do not overtighten it, as this will also lead to premature pipe cracks. 

Then, turn on the water tap and let the water run freely down the drain. Finally, check if there are any leaks from the weep hole or the joint between the garbage disposal and the drainage pipe. 

If the procedure was successful, the leaking from the weep hole should be solved completely.

How Do You Know That a Garbage Disposal is Leaking?

Honestly, it is difficult to tell that a garbage disposal is leaking, especially when it starts. However, over time you will see the following signs;

  • The dripping will become evident with a sound. For instance, if the weep hole problem stems from drainage pipes under too much water pressure, the damage enlarges over time. Hence, the dripping sound is audible.
  • You start seeing a wet floor under the sink. The floor should be dry enough to keep the cabinets and components under the sink safe. If it is soggy, this raises attention to the garbage disposal.
  • Mold starts growing under the garbage disposal. Some leaks are so minimal you will not notice them even after a week. However, the tiny drips create a suitable breeding area for molds. So, if you start seeing mold under the garbage disposal, check for a leak possibility.

Is a Leaking Garbage Disposal Dangerous?

Yes, it is. As we have observed, it may take you days to realize that your garbage disposal is leaking. During this period, mold may already have grown under the garbage disposal, which is unhealthy for the kitchen.

Moreover, You may trip on the soggy floor unknowingly and fall. In worst-case scenarios, people have broken their legs, backbone, or arms as a result.

Then there are the cabinets and things under the garbage disposal, which shouldn’t be exposed to water in most cases. If they are exposed, they are damaged, and the result may be incurred cost repairing and replacing them.

Finally, the garbage disposal is full of garbage, which becomes quite smelly when mixed with water and left. Imagine when this fluid leaks into the house. The odor may be unbearable, especially if you are sick.

Can You Still Use the Garbage Disposal If It is Leaking?

Yes, you can. But you shouldn’t use the garbage disposal if you find out that it is leaking, at least not until you correct the problem.

Continued use of leaking garbage disposal leads to more damage to the leaking part, especially if it is a crack.

Other than that, you may end up incurring higher costs if the components under the sink, especially the cabinets, get damaged by the leaking water.

After all, do you want more tasks cleaning the area filled with stinky water from the garbage disposal while you could sort it within less than an hour?

Parting Shot

Garbage disposal leaking from a weep hole is usually a result of faulty drainage pipes. Therefore, if you want to solve the problem, you will have to deal with the drainage pipes. However, if the pipes are blocked, you may only have to unblock them; hence no cost is incurred. 

However, if the pipes are cracked and damaged, the only solution is to replace them with new pipes. The best part is that once you solve the drainage pipes problem, you will have solved the problem with the weep hole.