If you open your dishwasher and find a pool of water at the bottom, there’s a good chance something isn’t working as it should. Drainage issues are common, but they can lead to bigger problems if ignored. Whether it’s a minor clog or a failing part, here’s what to look for before calling in a repair.
1. Start With the Filter
Most people don’t think about their dishwasher filter until there’s a problem. Food particles, grease, and debris can clog it up over time and stop the water from draining properly.
Quick fix:
Take out the bottom rack, locate the filter, and clean it thoroughly under warm water. Do this regularly to keep things running smoothly.
2. Check the Drain Hose
The drain hose connects your dishwasher to your sink or garbage disposal. If it’s clogged or bent, water won’t drain as it should.
Look for:
- Kinks in the hose
- Blockages you can flush out
- Proper positioning (it should have a high loop to prevent backflow)
3. Garbage Disposal Could Be the Problem
If your dishwasher is connected to a garbage disposal, a clog there could back things up. This is especially common after a new disposal installation if the knockout plug wasn’t removed.
What to try:
Run the disposal and flush it with cold water. If your dishwasher is new, double-check that the plug on the disposal inlet is actually removed.
4. Drain Pump Might Be Jammed or Broken
The pump is what moves dirty water out of your dishwasher. If it’s damaged or blocked, water stays put. Sometimes you’ll hear a low humming noise, which means the pump is trying but failing to do its job.
This isn’t always easy to fix without the right tools, so it’s usually something we’d recommend
having a technician handle.
5. It Could Be the Check Valve
The check valve keeps water from flowing back into the dishwasher once it’s drained. If it fails, dirty water can come back in or stay in the bottom of the tub.
If everything else looks fine and the water still isn’t draining, this might be the part that needs
replacing.
When It’s Time to Call a Repair Tech
You’ve cleaned the filter, checked the hose, and made sure your disposal is clear. If the water still isn’t draining, the problem is likely mechanical or electrical. A few possibilities:
- Faulty drain pump
- Wiring or control board issues
- Internal clogs
- Valve or sensor failure
These aren’t things you want to guess at. A professional can test the components safely and
recommend a fix without causing more damage.
We Handle Dishwasher Repairs Across Winnipeg
City Master Appliance has experience with all major dishwasher brands and models. We’re based in Winnipeg and help homeowners deal with draining issues, leaks, poor cleaning performance, and more. Our team will show up with the right tools and get your machine back to normal.
Bottom Line
A dishwasher that won’t drain is a hassle, but it doesn’t always mean you’re facing an expensive repair. Sometimes it’s as simple as a clogged filter or hose. If it turns out to be something more complicated, getting it looked at quickly can save you from a flooded kitchen and bigger repair bills later on.
