Introduction
Few things are more frustrating than opening your dishwasher to find a pool of dirty water at the bottom. A dishwasher that won’t drain can throw off your entire kitchen routine. The good news is, most drainage problems have simple explanations and many can be fixed without replacing the appliance.
At Dovis Plumbing, we’ve helped countless homeowners solve dishwasher issues. Here’s what you need to know about why dishwashers stop draining, plus the steps you can take before calling in a professional.
Common Reasons a Dishwasher That Won’t Drain
- Clogged filter – Food particles and grease can block the filter and stop water from passing through.
- Blocked drain hose – A kinked or clogged hose can trap water inside.
- Garbage disposal connection – If recently installed, the knockout plug inside the disposal may still be intact.
- Clogged air gap – If your kitchen sink has an air gap, it can get filled with debris.
- Faulty drain pump – When the pump fails, water won’t be pushed out.
Quick Fixes You Can Try with Dishwasher That Won’t Drain
- Clean the filter: Remove and rinse it under warm water.
- Check the drain hose: Make sure it isn’t twisted or clogged.
- Run the garbage disposal: This can clear the connection.
- Clean the air gap: If present, twist off the cap and rinse it.
- Reset the dishwasher: Sometimes an electronic reset solves minor issues.
When to Call a Professional to fix the Dishwasher That Won’t Drain
If you’ve tried these steps and water is still pooling, the problem may be deeper:
- The drain pump could be burned out.
- There may be a hidden clog in the kitchen drain line.
- A plumbing issue beyond the dishwasher could be backing water up.
In these cases, it’s best to bring in a licensed plumber to avoid water damage and costly repairs.
How to Prevent Future Drainage Issues
- Scrape excess food into the trash before loading dishes.
- Clean your dishwasher filter monthly.
- Run hot water before starting the cycle for better cleaning.
- Schedule routine plumbing maintenance if you notice slow drains.
Final Thoughts
Most dishwasher drainage problems are minor and can be solved with a quick cleaning or reset. But if the issue keeps coming back, it’s often a sign of a bigger plumbing problem.
At Dovis Plumbing, we’ll find the source of the problem and fix it right the first time so your kitchen runs smoothly again. Call Dovis Plumbing (954)516-1078 for expert dishwasher and kitchen plumbing repair you can count on!



