How to Install a Utility Sink next to Washer

Bathroom Scape may collect a share of sales or other compensation from the links on this page. This comes at no additional cost to you, and all the prices and availability are accurate at the time of publishing.

Having a utility sink next to your washer is a convenient way to control laundry messes and clean up after pet accidents. But installing a utility sink yourself can be tricky. To help make the process easier, we will provide step-by-step instructions on how to safely and efficiently install a utility sink next to your washer.

Before you embark on plumbing projects, it is essential to comprehend the supplies, instruments, and safety protocols that must be followed for a successful outcome.

We will provide you with detailed information on how to locate the water and waste outlets, safely cut the pipes, assemble the drain and faucet, and complete the necessary sealing work.

Even if you’re a newbie DIYer or have ample experience in this domain, following these directions can guarantee that your utility sink will be installed precisely and function swiftly.

Things To Consider Before Installing Your Utility Sink 

Things To Consider Before Installing Your Utility Sink 
Photo by: Nextluxury

Before you install your utility sink, it is important to consider a few key points. First, you will need to ensure that you have enough space for the sink. Measure the area you plan to install the sink in to make sure it will fit. 

You will also need to make sure the utility sink is properly connected to the water supply and is plumbed in properly. Consider if you need to move any existing plumbing fixtures to accommodate the new sink. Finally, consider what type of material you would like to use for the sink, as this will determine the cost and durability of the sink.

How To Install a Utility Sink Next to Washer

How To Install a Utility Sink Next to Washer
Photo by Sinkology

By taking the following steps, you can easily set up your utility sink.

Equipment and Tools Needed 

Steps to follow

1. Assess Your Layout

Assess the layout of your laundry room to determine where the utility sink will be installed and how far away from the washer the sink should be. You will also need to assess the water supply and waste outlets, as these will need to be cut in order to install the sink.

2. Remove the Drywall

Use a drywall saw to remove any excess drywall around the area where the utility sink will be installed. Make sure you wear protective goggles when working with the drywall. Utilizing a stud finder, pinpoint the area of your desired laundry utility sink by finding where the existing supply and drainage points extend to.

3. Drill Through the Studs

Utilize your 5/8-inch auger bit to create two holes in each stud that will lead you straight to the intended site of the utility sink. This will ensure a safe and secure fit for the sink.

4. Tap Into the Water Supply Lines

When using a copper pipe cutter, cautiously cut through the hot and cold water pipes of your washer. Make sure to remove any burrs on the piping before attaching a tee onto each line and connecting two PEX lines via the holes in your studs down to the utility sink’s location.

After completing the cutting of your hot and cold washing lines, take extra caution to ensure that all burrs are erased from the recently connected copper pipes using their respective tees.

5. Tap Into the Drain Line Standpipe

For the installation of your utility sink, you will need to cut it into the drain standpipe. Utilize a saw to carefully and accurately cut the pipe to the required size. Ensure that all burrs are removed from the cut line before attaching a P-trap.

6. Attach the Copper Stub Outs

Attach the copper stub outs to the hot and cold water supply lines and then connect these to your utility sink’s hot and cold inlets. Continue to attach the drain from your utility sink to the P-trap and fasten these with a metal slip joint.

7. Assemble the Utility Tub

Flip the utility tub onto its head, and fasten all four legs to the bottom of the basin. Secure the legs with bolts and washers to make sure of a strong fit.

8. Add the Sink Faucet and Trap

Connect the sink faucet to the hot and cold water supply lines, and then attach the trap that connects to your waste pipe. Finally, check all the connections to make sure they are secure.

9. Install the Drywall

Once all connections are secure, replace the drywall around the utility sink and properly seal it with a joint compound.

Frequently Asked Questions

Can I drain a utility sink into the washer standpipe?

While it is possible to attach a utility sink and washer standpipe, we do not recommend doing so. The reason is that the washer will constantly add water into the drain while the sink will remove water from it; this can result in an accumulation of debris over time and cause drainage issues. Avoid potential problems by connecting them separately.

What is the difference between a laundry sink and a utility sink?

A laundry sink is typically a shallow basin for washing clothes, while a utility sink is a deep, multi-purpose basin useful for tasks such as washing larger items, cleaning, and other household chores. Whereas laundry sinks are usually plastic, utility sinks can be from a variety of materials including stainless steel, cast iron, and acrylic. 

Does the washing machine need to be next to the sink?

You can fit a washing machine drain a maximum of 2.7 m (9 ft) from your washing machine. However, it is important to assess your layout and ensure that the washer and sink are at an appropriate distance from each other. 

Does a utility sink need a vent?

A utility sink is an indispensable component of home drainage and water supply systems. The fundamental role it plays is to balance the pressure in pipes, thereby keeping a vacuum from forming while the fixture drains away waste materials.

How far can the washer be from the drain pipe?

In order to comply with safety regulations, the drain must be at least 30″ up from the floor and no higher than 8 feet to the center of the standpipe. Simultaneously, a distance of 24″ must exist between the washer and the utility sink.


Installing a utility sink next to a washer is a great way to make your laundry room more efficient and organized. Following the steps in this article, you can effortlessly and safely install your utility sink, while also ensuring its plumbing system is connected securely.

Remember to always take safety precautions when doing any type of plumbing work and never hesitate to call a professional if you have any questions or need help. With the right tools and a little bit of patience, you can easily install a utility sink next to a washer.

If you liked this article about how to install a utility sink next to washer, consider checking out these other articles below —