Garbage Disposal Leaking — Where and How to Fix It
A leaking garbage disposal is common and the fix depends entirely on where it leaks. Dry the disposal, put a bucket under it, run water, and watch where it drips.
Leak From the Top (Sink Flange)
Water seeping from where the disposal meets the sink drain means the plumber's putty seal on the mounting flange has dried out. Loosen the mounting ring, lift the disposal, re-apply fresh plumber's putty under the flange, and re-tighten. Most common top leak.
Leak From the Side Connections
Two hoses connect to the side: the dishwasher inlet and the main drain elbow. Leaks here are usually a loose clamp or a worn rubber gasket at the drain elbow. Tighten the clamp or replace the gasket — cheap fixes.
Leak From the Bottom
Water dripping from the very bottom of the unit means the internal seals have failed and the disposal is cracked or rusted through inside. This cannot be repaired — replace the disposal. Bottom leaks mean the unit is at end of life.
Reset and Test
After any repair, run water and the disposal to confirm the leak is gone. Replacing a disposal is a manageable DIY job if you went the replacement route.
Parts & Tools
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FAQ
A bottom leak means the internal seals have failed and the unit is cracked inside — it can't be repaired. Replace the disposal.
Yes. A top/flange leak is usually dried-out plumber's putty. Lift the unit, apply fresh putty under the sink flange, and remount it.
Always unplug an appliance and shut off its water supply before servicing. This guide is informational and not a substitute for a qualified technician.