What to do when Disposal Is Leaking?

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What to do when Disposal Is Leaking?


Garbage disposal leaks can occur from a number of places on a garbage disposer. Common areas include the sink flange where the disposal connects to the bottom of the sink, the hose that leads from the dishwasher to the disposal, and hose that discharges waste from the disposal to the drain system.


Leak at the Sink Flange

The constant vibration of a garbage disposal, over time, can loosen the mounting apparatus that holds the appliance to the sink drain opening. This sink mounting flange is a likely place for leaking.


    Turn off power to the disposal at the electrical service panel by shutting off the circuit breaker that controls it.

    At the disposer mounting ring under the sink, turn the disposal to the left (counter-clockwise from bottom) to loosen and remove the unit from its mounting flange.

    Tighten down the three mounting bolts holding the flange to the sink.

    If the bolts are tight, the leak may be caused by failed plumber's putty. Loosen the bolts and push the sink flange slightly above the surface of the sink.

    Force a bead of new plumbers putty between the sink flange and the sink, going completely around the flange.

    Re-tighten the mounting bolts from below, drawing the sink flange tight to the sink surface. When excess putty oozes out, wipe away the excess.

    Reinstall the disposal and turn the power back on at the service panel.

    Check for leaks as you run the water in the sink.


Leak at the Dishwasher Connection

The rubber hose that funnels waste water from the dishwasher to the garbage disposal is also a place where leads frequently occur.


    Tighten the hose clamp on the dishwasher hose connected to the dishwasher inlet on the disposer.

    Replace the hose if the hose continues to leak.


Leak at the Discharge Drainpipe

Another plastic pipe carries directs waste water from the disposal to the sink drain trap, and this fitting can leak when the gasket get old.


    Check the bolts holding the discharge pipe to the disposal, making sure they are tight.

    If this does not work, remove the bolts and the pipe and replace the gasket seal between the pipe and the disposal.

    Reinstall the bolts and tighten them down.

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