Laundry Plumbing Layout
A laundry plumbing layout has to account for a washer standpipe and shutoff valve in addition to the utility sink hookup, details that are easy to miss if you're used to drawing a simple sink connection. ArcSite's laundry plumbing layout gives you that routing already worked out, ready to adjust to your own utility room.
Key Features
This laundry plumbing layout includes
- Hot and cold water supply lines to the utility sink and washer outlet box
- Labeled shutoff valves at the washer outlet
- Washer drain standpipe for overflow protection
- Utility sink with shared drain and water lines
- Vented drainage routing to existing plumbing
The standpipe is shown separately from the utility sink drain rather than combined into one line, worth keeping since each needs its own overflow protection.
Accurate to scale
Design from anywhere
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Design tips
Key Considerations for a Laundry Plumbing Layout
A washer standpipe and utility sink hookup both need their own drain connection, and missing either one is a common mistake in a retrofit where the plumbing has to tie into existing lines. In ArcSite, you can mark up this laundry plumbing layout with your own washer and sink connections for the room you're working on.
Frequently asked questions
Does this layout meet standard plumbing codes?
It follows common best practices, but always confirm local code requirements, especially for venting and backflow prevention.
Can I use this setup with a tankless water heater?
Yes, though additional temperature regulation and flow control may be required depending on your model.
What’s the purpose of the washer standpipe?
It prevents wastewater from siphoning back and allows overflow to be safely drained.






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