How to Unclog Laundry Sink Drains


Drains are key components to a well functioning home. When the drain in a laundry sink becomes clogged, it can be a frustrating and messy experience. A clogged drain requires immediate attention especially when it is a heavily used utility drain. Most clogged drains can be remedied without a professional plumber and you will save time and money by taking care of it yourself.

Things You'll Need

  • Plunger
  • Bucket
  • Pliers

Unclogging a Laundry Sink Drain

  • Check the other drains in your house to make sure the problem is isolated to the laundry sink. If all other drains are draining normally, then it is safe to assume the problem is only at the one location. If other drains are slow to drain the problem may be bigger than just one sink.

  • Remove any strainers in the drain and use your fingers to remove any solids that may be sitting at the bottom of the drain cup. After you remove solids, run some water into the sink to check the drain performance.

  • Fill the drain with approximately 3 inches of water and use a plunger. Place the plunger over the opening of the drain and begin to plunge. If this is successful the water will disappear quickly. If not proceed to the next step.

  • Place a bucket below the sink under the pipes to catch any water in the pipes.

  • Remove the S-trap from the bottom of the pipe. This is a portion of pipe that is shaped like an ‘S’, and retains a small amount water to help prevent sewer gas from entering the home. However, they are also a good place for clogs to develop. Remove the S-trap with a pair of pliers.

  • Clean the S-trap and reattach it to the pipes.

  • Test the laundry drain by running water into the sink. Water should flow freely down the drain.

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  • Photo Credit drain black and white image by askthegeek from
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