The City of Seattle began publishing our Standard Specifications and Plans in 1910. Historic Standards are presented below in order of publication year. Some previous editions are based on APWA, WSDOT, or other agency publications. If you have questions about the historic Standards, please contact us at

The following documents are in PDF format unless otherwise noted.

Standard Specifications and Plans for Municipal Construction

Public Utilities

Andrew Lee, General Manager and CEO
Address: 700 5th Avenue, Suite 4900, Seattle, WA, 98104
Mailing Address: PO Box 34018, Seattle, WA, 98124-5177
Phone: (206) 684-3000

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Seattle Public Utilities (SPU) is comprised of three major direct-service providing utilities: the Water Utility, the Drainage and Wastewater Utility, and the Solid Waste Utility.