A leaking garbage disposal can cause water damage, bad odors, and mold growth under your sink. Leaks can come from multiple places, and identifying the exact source is the key to fixing the problem quickly.
📥 Download the Printable Leak Detection & Repair Checklist
Common Causes of a Leaking Garbage Disposal
🔹 Leaking from the Sink Flange
🔹 Leaking from the Drain Pipe Connection
🔹 Leaking from the Bottom of the Unit
🔹 Cracked Disposal Housing
🔹 Loose or Worn-Out Gaskets
📥 Download the Step-by-Step Repair Checklist
Step-by-Step Guide to Fix a Leaking Garbage Disposal
Step 1 - Turn Off Power & Inspect the Leak
✅ Unplug the disposal or turn off the breaker for safety.
✅ Place a bowl or towel under the unit to catch any dripping water.
✅ Use a flashlight to inspect the disposal and determine the leak source.
🚨 NEVER attempt a repair with the power on!
Step 2 - Fix a Leak from the Sink Flange
A sink flange is the metal ring where the disposal connects to the sink drain.
🔧 Tighten the Mounting Bolts:
- Use a screwdriver to tighten the three mounting bolts.
🔧 Apply Fresh Plumber’s Putty:
- If the bolts are tight, remove the flange and apply new plumber’s putty around it.
📞 Schedule a Repair if the Leak Persists
Step 3 - Fix a Leak from the Drain Pipe
A leak at the drain pipe connection is often caused by loose or damaged seals.
🔧 Tighten the Drain Connections:
- Use a wrench to tighten the connection to the P-trap or dishwasher hose.
🔧 Replace the Rubber Gasket:
- If tightening doesn’t help, replace the rubber gasket between the drain pipe and disposal.
📞 Get Professional Drain Repair
Step 4 - Fix a Leak from the Bottom of the Disposal
If the leak is coming from the bottom, the internal seals are worn out.
🚨 This means the garbage disposal needs to be replaced!
✅ Check Your Warranty:
- If your disposal is under 5 years old, check if warranty replacement is available.
📞 Schedule a Garbage Disposal Replacement
Step 5 - Fix a Cracked Disposal Housing
A crack in the unit cannot be repaired and means replacement is necessary.
🚨 Temporary Fix:
- Apply waterproof epoxy as a temporary solution, but replacement is needed soon.
📞 Schedule a Disposal Replacement
Download the Garbage Disposal Leak Detection & Repair Checklist
📥 Get the Printable Checklist
Watch a Step-by-Step Video Tutorial
📹 Watch How to Fix a Leaking Garbage Disposal
FAQs About Garbage Disposal Clogs
A leak from the bottom usually means internal seals have failed, and the disposal needs replacement.
Yes! If the leak is from the sink flange or drain connection, you can tighten the connections or replace gaskets.
If tightening bolts & replacing seals doesn’t fix the leak, or the unit is cracked, replacement is the best option.
📥 Download the Leak Repair Guide
Avoid putting grease, fibrous foods, and large scraps into the unit. Always run cold water while grinding food.
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