Garbage disposals reduce odors, prevent sink clogs and reduce the risk of pest infestations, making them one of the most popular kitchen appliances. If your disposal isn’t working, however, it can quickly turn into a major inconvenience. This is especially true of a garbage disposal leaking from the bottom, which can cause mold growth, cabinet damage and electrical problems. The good news is that Duane Blanton has experienced plumbers who can fix the problem quickly.
Common Signs Your Garbage Disposal Is Leaking
Leaks aren’t always immediately obvious. In some cases, moisture builds up over time, so you don’t notice there’s a problem until you notice a musty odor or see that the cabinet under your kitchen sink has water damage.
Watch for these signs of a sink disposal leaking:
- Dampness around the disposal
- Rust or corrosion in the disposal housing (outer shell)
- Water pooling in the cabinet under your sink
- Foul or musty odors
- Dripping water when the sink runs
If you notice any of these issues, call a plumber immediately. Early action can prevent costly water damage and prevent mold from growing underneath your kitchen sink.
Why Is Your Garbage Disposal Leaking from the Bottom?
A garbage disposal leaking from the bottom has water coming from the underside of the unit. This usually points to internal damage, not a loose connection. Here are the most common causes.
1. Worn Internal Seals
Every garbage disposal has internal seals designed to keep water away from the motor. Over time, these seals can wear out due to frequent use, exposure to harsh cleaning chemicals and constant contact with grease and food debris. When a seal begins to fail, water may escape through the bottom of your disposal. This type of damage is more common in older disposals.
2. Corrosion
Corrosion occurs when metal and other materials break down due to chemical reactions in their environment. If you live in an area with hard water, the minerals that come into contact with your disposal can accelerate this process. Rust weakens the metal in a garbage disposal, increasing the risk of leaks from the bottom. Regular cleaning can slow down mineral buildup, but it can’t prevent it completely.
3. Cracked Disposal Housing
The housing is sturdy, but constant grinding from your garbage disposal blades can cause it to weaken over time. Extra stress from heavy objects, corrosion and excessive vibration can cause cracks to form, allowing water to leak from the bottom of your disposal.
4. Damaged Internal Components
The term “garbage disposal blades” is a bit of a misnomer. Most modern disposals have lugs or impellers mounted on a spinning plate. When one of these components is damaged, it can strain other parts of the system, resulting in unexpected leaks.
Can You Repair a Leaking Garbage Disposal from the Bottom?
If your disposal issue is due to a problem with a pipe, hose or flange, you may be able to repair it by replacing damaged seals or tightening the fittings. It’s much harder to fix a garbage disposal leaking from the bottom if there’s housing damage or an internal seal failure. Replacement is often the best option.
Consider replacing your garbage disposal if:
- The housing is cracked.
- Your unit is more than 8 years old.
- There’s severe rust.
- The unit has frequent jams.
- You notice unusual noises coming from the motor.
In many cases, getting a new disposal is more cost-effective than repairing a damaged one.
When to Call a Professional Plumber
Persistent, unexplained leaks require professional help. One of our licensed plumbers can determine why your disposal is leaking, check for hidden issues and tighten loose fittings (if needed). If necessary, we’ll replace the disposal.
Once we fix the problem, you can avoid repeated issues by running cold water during use, cleaning your disposal regularly and scheduling regular inspections. We also recommend that you avoid grinding fruit pits, bones and foods with hard shells.
Partner With a Trusted Expert
Duane Blanton has been serving the Chicagoland area for nearly 40 years. Our plumbers are motivated to solve your problems while providing excellent service. Call us today if you have an issue with your garbage disposal leaking from the bottom.
