Can a leaking garbage disposal be fixed?

The ability to fix a leaking garbage disposal really depends on where the leaking is originating. 

How do you find where it is leaking?

If it is suspected that the garbage disposal is leaking, the source of the leak will need to be investigated. A flashlight and towel (after all, it is leaking) will be needed. Also, since mixing electricity and water, it will be important to unplug the garbage disposal and turn off the breaker to the appliance. Safety first! 

Leaking from the plumbing pipes

If the leaking is occurring from the plumbing connection, then the answer is most likely yes, the leak can be fixed. This also depends on whether or not the garbage disposal was significantly damaged from the leaking. Usually, a plumbing leak can be pretty easily fixed as it can only be from a few sources. It may be as simple as tightening a clamp or replacing a gasket or the sealant at the flange.

Leaking from the housing

If the leaking is occurring from the garbage disposal itself, then the answer is typically no, the leak cannot be repaired. Garbage disposals are typically not very expensive ($50 - $150) and easy enough to install that it does not warrant the time and energy to attempt to repair the appliance. Once there is a leak in the disposal, it is recommended that it be replaced with a new unit to help prevent any future damage to the cabinetry.

For a typical garbage disposal installation, watch this video: https://youtu.be/fedvNYrsLT0