What To Do if the Dishwasher is Not Draining?

• Check the Dishwasher Filter

A common cause of drainage problems is a clogged filter. Food debris, grease, and soap residue can block water from draining properly. Remove the bottom rack and locate the filter at the bottom of the tub—usually under a twist-off cap or mesh screen. Take out the filter, rinse it thoroughly under warm water, and scrub away buildup using a soft brush or sponge.

• Inspect the Drain Hose

Next, check the drain hose for any kinks, blockages, or clogs. The drain hose connects the dishwasher to the sink or garbage disposal. If it’s kinked, straighten it out. If you suspect a clog, disconnect the hose and use a long, flexible brush or a blast of water to clear it out. Be sure to place a bucket or towel beneath the hose to catch any water that spills.

• Clear the Air Gap (If Applicable)

Many dishwashers have an air gap on the sink to prevent dirty water from flowing back into the appliance. If water is leaking from the air gap or the dishwasher still isn’t draining, remove the cap and clean out any debris that might be causing the blockage.

• Run the Garbage Disposal

If your dishwasher drains through the garbage disposal, make sure the disposal is clear. Run it with water for a few seconds to flush out any buildup. Sometimes, clogs in the garbage disposal can back up into the dishwasher.

• Test the Drain Pump

The drain pump is responsible for pushing water out of the dishwasher. If you hear a humming or clicking sound but no draining occurs, the pump may be stuck or failing. This is a more technical repair, so if you suspect a faulty pump, it’s best to call a reliable plumbing service.

• Call a Professional Plumber if the Problem Persists

If you've checked all the common causes and your dishwasher still won’t drain, it’s time to bring in the experts. A professional plumber can perform a thorough diagnosis, check for hidden issues, and safely make any necessary repairs. Avoid forcing parts or running repeated cycles, which could worsen the problem.

Call Mr. Rooter Plumbing for Help with Fixing a Clogged Dishwasher

If your dishwasher is not draining and you need professional help, trust the plumbers at Mr. Rooter Plumbing. A clogged dishwasher can lead to standing water, unpleasant odors, and damage to your kitchen floor or cabinetry. Our team will inspect the appliance, clear any clogs, and ensure that your plumbing system is functioning properly. Mr. Rooter Plumbing is the name you can count on for all of your clogged drain cleaning needs. Our plumbers have the knowledge and tools to clean all types of drains, including water-using appliances. Contact us if you need help with clearing a clogged dishwasher.