How to Install a Utility Sink Next to Washer

How to Install a Utility Sink Next to WasherMost of the house has a specific area or room where people set washing machine, toiletries, etc. things. Usually, they make the laundry room on the first floor. It helps to drain the water from the washing machine. But adding a utility sink in the same place in the same drain of the washer is a better idea. Installing a utility sink next to washer provides several facilities.

In this content, we bring you the benefits of adding a utility sink in the laundry room. Also, you would be able to know how to install a utility sink next to the washer.

Benefits of a Utility Sink in the Laundry Room:

  • After you use the washing machine, there will be possible fabric lint and hair those wash off the clothes. They may directly clog the sewage system unless you add a sink beside the device. When you empty the washer into the utility sink, this debris will be filtered. It’s because this sink has a unique filtration system.
  • When you are using a washing machine, your hands may get soapy sometimes. Even some delicate may need hand-washing. Otherwise, they may acquire damages. A utility sink provides you this advantage.
  • You can get more benefits like different cleaning in the same room. Using the sink, you can clean the detergent of washer and fabric softener dispenser drawer. You can keep things for cleaning the washing machine upon the sink base. If the same room has a toilet, there is no need for another place to wash dirty hands.

There can be more positive aspects of installing a laundry utility sink in the laundry plumbing system. You can wash your pet cat or doggy there. Also, you can do facial stuff and keeping things there. You can also easily add water in the cloth washer with the help of the sink tap.

Will you still think of not installing a utility sink?

If your answer is definite, then move to the next part of this content.

Installation of a Utility Sink:

Through this method, you empty or drain the water from the washer through the sink. You should connect the machine to the sink drain if the drainpipe is of two or more inches diameters. Less diameter pipe won’t be able to discharge water at good volume from the washer. You should also arrange separate P-trap and a standpipe to prevent water backup.

Before you start working, you should put on gloves and eyewear. These are for your safety during the installation.

Tools Needed:

  • A pair of gloves
  • Safety goggles
  • A tape measure or scale
  • A waste Y-fitting
  • A permanent marker
  • A pipe cutter or reciprocating saw
  • A utility knifes
  • A primer and solvent glue
  • 90° elbow
  • 2” standpipe with quality trap
  • Double 0.5” deck screws
  • 5” screws
  • A pipe straps
  • Optional backer board

Now, follow these below steps to complete the installation:

  1. Bring a scale or tape measure and measure the waste Y-fitting length. Then, you need to subtract an inch from the calculation.
  2. Find out the drain pipe section that is for installing Y-fitting. Again, use your scale to measure and mark the same length on the waste pipe as you have just calculated. You should draw straight lines to avoid errors of adding a utility sink.
  3. Take the pipe cutter or reciprocating saw. Then cut the drainpipe to the length you have marked. Use a utility knife to wipe the burrs where you cut the pipe.
  4. Now, you should dry-fit the Y-fitting to both pieces of the drain pipe. This time, turn the Y-fitting to keep the opening directed to the front and parallel with the pipe for draining. You can cut and size more pipe in case the situation deserves.
  5. Here, you are going to attach the Y-fitting to the washer drain pipe. Use primer and solvent glue to do so. Open them and start wiping the inner edges of Y-fitting. It will help to connect to the line of the drain with the swab attached to the lid. Then keep the Y-fitting at a place with the drain line.
  6. Now, work with the 90° elbow. Dry-fit the elbow to the opening on Y-fitting. Then, dry-fit a standpipe with a trap positioned to the elbow. This installation of elbow and trap will create ¾ of a 360° circle. You can see this from the front side. If you fit the standpipe properly, it will be on a vertical axis.
  7. You need to measure more things now. Don’t get bored. Calculate the distance between the floor to the standpipe edge. Now, put a mark at 34”. Keep the standpipe in another place. Then cut along the line for creating standpipe at the right height. It will be used for washing machine drainage. The 34” standpipe height will be able to prevent water backup.
  8. Now, go for removing the Y-fitting dry-fit sections. Connect the sections using primer and solvent glue.
  9. This is the last step you should follow. You should be careful if the standpipe is loosened or not. Secure this thing against the wall. You can also use a backer board to do the same thing. Usually, a backer board has the size of 1-by-4” or 2-by-4”. You can attach this to standpipe’s both sides to the studs. But you will need a pipe strap to attach the standpipe to the board. Keep the board positioned almost 2” from the top edge. Use 0.5” wood actress to place the pipe strap well.

Now, you can add sink next to the washing machine without any worries.


Installing a utility sink requires less than 3 hours. It depends on how fast you can measure the pipe and do other measurements. You should keep a few things in mind. If there is no sewer drain available for tapping, remove the concrete floor. You may need to tap the main sewer system drain for attaching the standpipe. In some conditions, there will be a need for a vent pipe or air-pass valve. You can look for them in the nearest plumbing stores.

Now, it’s your turn to decide when you should start installing a utility sink near the washing machine.

All the best!

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