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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 2012 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

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

Proposed Changes


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