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Common Reasons Why Your Dishwasher Isn’t Draining Properly

Installing a dishwasher is one of the most significant additions you can make to a kitchen. Not only does it make it easy to take care of one of the worst tasks in the kitchen, but it makes it more efficient and less wasteful to get the job done (using less water than hand washing the same number of dishes in the sink). Dishwashers are less fantastic when they don’t work. If you’re finding that your dishwasher isn’t draining correctly, read on for some potential reasons to look into and consider. 

Alpha Plumbing Dishwasher

A working dishwasher can make chores easier.

Your Dishwasher Has A Damaged Filter

You should first check the filter basket. This keeps unwanted items from going down the drain that should not, and once that stuff starts to build up, it will clog. Most dishwashers will allow the basket to come out and completely clean. Ensure you thoroughly clean the basket, or you will have to clean it again sooner than later. 

The Drain Hose In Your Dishwasher Is Clogged 

The drain hose is an integral part of the dishwasher system, but it can be an issue if it is not in good condition. If the drain hose clogs, it can cause the whole dishwasher to clog. If you’ve cleaned out the filter basket and the dishwasher still won’t drain, your next step is to check the hose. The hose needs to have a tight seal, and you should be able to push a wire hanger (unbent) through it. If there is a clog, that should push it out. 

The Valve

The drain valve is the final thing that you should check on your own. A broken drain valve could cause the dishwasher to fail to drain completely. If it is broken, you should have a professional come out and repair or replace it. 

The Air Gap

The air gap is the part of the dishwasher that connects the dishwasher to the sink and prevents the contaminated water from flowing into the dishwasher. If the air gap is blocked, it can keep the dishwasher from draining completely.

The Sewer Line

If none of these fixes solve the issue, there may be a more significant problem with the sewer line. Usually, if the sewer line is blocked, it will cause more than just one fixture or appliance to back up. If there is a main sewer line issue, you will need a professional plumber to address it.


Alpha Plumbing is a full-service plumbing and contracting company serving the Baltimore and Annapolis metro area with expertise in all aspects of plumbing. We’re family-owned and operated since 1991 from our office in Pasadena. We offer quality plumbing services at reasonable rates in a timely fashion. Our trucks are equipped with GPS systems to ensure we’re prompt and on time. No job is too large or too small! We maintain a fleet of well-stocked trucks and also own and operate our backhoes for jobs requiring excavation.

For more information and to get a free no-obligation estimate, you can contact us on our website, send us an e-mail, or give us a call at (410) 255-5998.

This entry was posted on Friday, August 26th, 2022 at 3:57 pm. Both comments and pings are currently closed.

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Alpha Plumbing

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Alpha Plumbing

8813 Fort Smallwood Rd
Pasadena, MD 21122


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