Dirty Grit Backing Up From Garbage Disposal

Disposal apparently disposed of about 14-16 egg shells. However, the sink then began to fill with water and dirty grit. About a week earlier, I had about 3 ft. of cast iron drainpipe in the basement removed because it was badly cracked and repeatedly filled with pumber's epoxy. The dishwasher drain had been improperly connected into the cast iron pipe years before, so the plumber had to do a new connection into the new plasic drain pipe. I'm not sure whether I had run the disposal between the repairs and when the grit started filling up into the sink.


But I had run water into the sink, the primary sink side I usually use. It has now been about 2 days of not letting water go down that sink, so I assume the disposal is empty. What should I do to ensure that dirty grit isn't filling up into my sink through the disposal? I'm worried that perhaps a lot of cast iron pipe fell down into the pipe when that section was removed. I don't have a picture and the water has now gone down. There is only grit on the surface of my sink.

By Beverly

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January 9, 20150 found this helpful
Best Answer

It is not uncommon to get a back up in your sinks when you have a disposal. I have some questions for you - does the disposal sink run water easily now? If so, I think your problem is solved. Is the dirty grit sand or ground up egg shells or something else?


I would seriously doubt that replacing a pipe in the basement would affect your disposal. If it is ground up shells, and these are still there, your trap may be plugged. What I used to do is run water in both sinks. Work the plunger in the disposal sink. If it is the trap, the gunk will rise up in the other sink. Plug that sink with something; another plunger is the best thing. Then plunge vigorously in the disposal sink to dislodge the plug. If this doesn't solve your problem, call your plumber back. Do not use any caustic cleaners in your disposal sink.

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January 5, 20150 found this helpful

Appears you should have a plumber check your pipes and disposal again for any new problems.

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