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Plumbing Code

See also: Side Sewer Code

What Is It?

The Seattle Plumbing Code regulates design, installation, and maintenance of plumbing systems and fixtures. The 2015 Washington State Plumbing Code with Seattle amendments is in effect in Seattle. The Seattle Plumbing Code is enforced by Public Health - Seattle & King County.

Read the Code


2015 Seattle Plumbing Code

2012 Seattle Plumbing Code

This is a read-only version of the 2012 Seattle Plumbing Code. You can buy a full version from the IAMPO Online Store, or by calling (909) 472-4208

Recent Changes

As of January 1, 2017, you must design your Seattle projects using the 2015 Seattle Plumbing Code. We will have electronic and print copies of the 2015 code available soon. We will post the electronic version on this website as soon as it's available. Print versions will be available through our Public Resource Center.

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