The part(s) or condition(s) listed below for the symptom Garbage disposal leaking water are ordered from most likely to least likely to occur. Check or test each item, starting with the items at the top of the page.
The sink flange gasket might be torn. If the flange gasket is torn, replace it. In addition, make sure that the sink flange is properly tightened.
The O-ring might be torn or broken. If the O-ring is damaged, replace it.
The splash guard might be torn or damaged. If the splash guard is torn, replace it.
The splash guard is often part of the main gasket. If the garbage disposer is leaking between the disposer and the mounting flange, inspect the splash guard for damage. If the splash guard is torn or damaged, replace it. On some models, the splash guard and stopper are sold as a unit. If you cannot replace the splash guard separately, replace both the splash guard and stopper.