Washing machine drain overflows by wall where discharge hose goes in

Washing machine drain overflows by wall where discharge hose goes in. If your washing machine drain overflows, and you don’t know what to do next?

Don’t worry!

We are here with an efficient diagnostic method to identify the site and fix it yourself. The drains overflow because of a clog in the drain standpipe. It is the site where the hose goes in. Sometimes the standpipe is too small to handle a large amount of water forced to drain. 

If the clogs are enormous, the more mess it will create.

Types of machines 

  1. An advanced machine uses 15 to 30 gallons of water per load. 
  2. Old machines use 30 to 45 gallons per load.

Still, it’s an enormous amount of water to be cleaned in case the drain overflows.

Washing machine drain overflows by wall where discharge hose goes inwashing machine drain overflows by wall where discharge hose goes in 2022

If you don’t know how to find out the site of the blockade, follow these steps.

  • Run the machine drainage cycle. 
  • The drained water goes into the hoses and then into the standpipe.
  • If you Observe water coming out of the standpipe, the washer’s drain is the main issue.
  • Depending upon the filling time of the standpipe, you can diagnose the exact site of the blockade.

 Observe the time frame and interpret what that means.

  1. If the drain overflows within a few seconds, the clog is near the standpipe’s surface or in the machine hose. In case of a clog, use a hand-operated snake to eliminate it.
  2. If the pipe overflows after a minute, the clog lies deep in the drainpipe system. In this case, employ the snake to remove the clog.
  3. If the pipe overflows after a couple of minutes, a severe blockage is present in the plumbing system.

Call a licensed plumber to inspect the sewage lines to troubleshoot the problem.

Remember to stop the washing machine drain cycle after the leaky point is spotted.

How to Unblock a Washing Machine Standpipeunblock a washing machine standpipe

Once you get to the site of the issue and the problem lies in the standpipe, let’s get rid of the clog!

To unclog a standpipe where the drain hose goes in, follow the steps given below.

  1. Turn off the washing machine.
  2. Remove the drain hose by cutting the zip ties and holding it firmly with the standpipe.
  3. Cut the zip tie to remove the hose.
  4. Take a garden hose and stick it down in the machine’s standpipe.
  5. Turn it down in the standpipe. 
  6. It confirms the blockage of the standpipe.
  7. The garden hose cannot unclog the debris because the unclogging needs 2 to 3 times more pressure than the garden hose can produce. 
  8. If the washing machine pressure cannot do that, the garden hose cannot do it either.
  9. Once the site is confirmed, garb a drain auger (snake) and feed it into the pipe. 
  10. Keep feeding the snake down into the pipe until it reaches the blockage. You will feel resistance when feeding the snake in the standpipe. That the site of blockade
  11. After that, rotate the snake against the clog until you remove it. 
  12. Let the auger feed-in smoothly. The clog will get attached to the snake.
  13. Once you remove the auger, the clog will get eliminated.
  14. You can also use the liquid plunger to dissolve the clot.
  15. Remember to follow instructions before using chemicals down in the standpipe to break the clogs.
  16. Run a water cycle to eliminate the remaining debris if present.


Doing laundry is daily household work. If you are dealing with the clogs in the standpipe, the workload automatically increases with a lot of mess. Follow the simple method given above to get rid of these clogs and debris to avoid drain overflow.

Related Guides