Garbage Disposal Leaking from Bottom

Garbage Disposal Leaking from Bottom

If you notice the cabinet under your is sink wet, there's a good chance that your garbage disposal is leaking. A garbage disposal leaking from the bottom can be a real problem, but fortunately there are other fixable issues that can be the culprit of this annoying problem.

If you garbage disposal is leaking, there are 3 common problems. We'll take a look at each and give you the information you need to know to make the fix.

Garbage Disposal Leaking

Garbage Disposal Leaking from Bottom

If you suspect that your garbage disposal is leaking from the bottom you're most likely looking at buying a new unit. But first, double check to make sure the leak is actually coming from the bottom of the garbage disposal, and not leaking from the top or side and dripping from the bottom.

If in fact, the garbage disposal is leaking from the bottom then it's probably an internal seal. Over time, the internal seals that protect the motor will break down and no longer be able to perform their task. It's also possible that the protective shell case is cracked. Either way, you need a new garbage disposal. 

A new garbage disposal should last about 8 to 15 years, and they aren't too expensive. You'll probably spend about $400 between parts and labor if you hire a professional to install it for you. <Networx Link> Or, you can do it yourself and save some money.

Garbage Disposal Leaking from Top

If your garbage disposal is leaking from the top the problem is most likely coming from the sink flange. The sink flange sits inside the sink drain and is sealed with plumber's putty. Over time, the plumber's putty breaks down or the bolts loosen and the sink flange is no longer able to make a water tight seal. 

You'll need to remove the garbage disposal and re-seal the sink flange with plumber's putty.

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WM Harvey 043010 Stainless Plumbers Putty, 14 oz
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Garbage Disposal Leaking from Side

When a garbage disposal leaks from the side the culprit is usually the drain lines. There are two drain lines that connect to the garbage disposal.

The smaller drain connects the dishwasher drain pipe to the garbage disposal's dishwasher inlet; and the larger drain connects the unit to the sewer.

If the leak is coming from the dishwasher hose, tighten the screw on the metal clamp with a screw driver to secure the hose. This will usually stop the leaking. 

If the leak is coming from the main drain line, you may be able to stop the leak by simply tightening the screws. However, if that doesn't work, there's a rubber gasket inside the pipe which may need to be replaced.

Last update on 2018-07-16 / Affiliate links / Images from Amazon Product Advertising API