Dishwasher Smells Like Sewage? Here’s Why…

Dishwasher Smells Like Sewage? Here’s Why…

If your dishwasher is starting to smell like sewage, it can be a real stinky situation. Not only is the smell unpleasant, but it can also be a sign of a bigger – and more expensive – underlying problem. In this blog post, we will explore some of the most common reasons why dishwashers start to smell like sewage. We will also provide tips on how to fix the issue and get your dishwasher smelling fresh again! Keep reading below to discover why your dishwasher might smell like sewage, and what you can do about it.

What can cause a smelly dishwasher?

There are many reasons for why your dishwasher might start to smell bad. Let’s explore some of the most common causes:

Dirty filter that needs replacing.

Every dishwasher has a filter that helps to trap food particles and other debris. Over time, this filter can become clogged with gunk – which can lead to a nasty smell which can smell similar to sewage due to the rotting food. If you think your dishwasher’s filter might be the issue, it’s best to consult your dishwasher’s manual on how to replace it.

Generally speaking, however, here is a step-by-step guide on how to replace your dishwasher’s filter and get it smelling fresh again:

  1. Remove the drain filter. It should be located at the bottom of your dishwasher, depending on the manufacturer. Check your manual to be sure.
  2. Wash the drain filter in your sink. Now, you’ll want to remove any food particles or debris that might be caught in the filter. The easiest way to do this is to wash it in your sink with some dish soap and warm water.
  3. Check the drain of your dishwasher. Before you replace the filter, check the drain of your dishwasher for any clogs or build-up. If there is any, clear it out with a plunger or a drain snake.
  4. Re-insert the filter and run an empty cycle. Now that your dishwasher’s drain is clear and the filter is clean, you can re-insert the filter. Once it’s back in place, run an empty cycle to make sure everything is working properly.

Blockage in your dishwasher pipes.

Dishwasher drains and pipes actually run up into the roof of most homes, so it’s possible for things like leaves or twigs to fall down and clog the dishwasher pipes. If you think there might be a blockage in your dishwasher pipes, it’s best to call a professional plumber (or even an HVAC tech) to come and take a look.

Main line pipe problems.

If there’s a problem with your main line water supply, it can cause dishwashers (and other appliances) to back up and start smelling like sewage. If you think this might be the issue, get out of your house immediately and shut off the water supply to your entire home. It’s possible that all of the water supply lines in your house could be contaminated with sewage water. Once you’ve shut off the water, call a professional plumber to come and take a look at your dishwasher (and main line pipe).

Hopefully, this is not the problem, but it is always better to be safe than sorry!

Still having problems?

Call Western Rooter & Plumbing today to get a professional plumber sent out to your residence to take a look at your dishwasher. We will diagnose the problem and provide a solution that will get your dishwasher smelling fresh and clean again in no time! Give us a call today to schedule an appointment, or send us a message on our website to get a call back.

John, Larry, Mike, owners of Western Rooter & Plumbing

Need expert plumbing help?

If you’re having plumbing issues or emergencies, contact Western Rooter & Plumbing online or call our dispatch center at (626) 448-6455. We are the Los Angeles County and San Gabriel Valley’s number one plumbers – don’t wait, call now!



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