Even the most trustworthy garbage disposal will develop a leak from time to time; however, just because your food waste disposer has developed a leak does not necessarily mean that it needs to be replaced. Doing a little bit of investigating and troubleshooting before deciding to run out and buy a new garbage disposal can mean the difference between spending $10.00 for a replacement and $100.00+ to replace the entire unit.
Remove all wet wipes, tissues, sanitary napkins, paper towels, and anything else in your bathroom that you wouldn't want someone to flush down the toilet. Despite the marketing claims that wet wipes are flushable, they are known for causing clogs and other plumbing problems. If someone needs these materials, they will ask, which will give you a great opportunity to explain what can and cannot be flushed down the toilet.
Another common cause for a leaking garbage disposal is the disposal flange. A leak at the very most upper area of the garbage disposal could be the garbage disposal flange which goes through the sink. A garbage disposal flange should be sealed with Plumber’s putty and then tightened from underneath the sink. If this is not tight enough or if it has managed to come loose (which can happen) then the garbage disposal will have to be taken down so the flange can be resealed and then the garbage disposal can be rehung.