GENERAL INFORMATION: 503-823-7404
1120 SW Fifth Ave, Suite 600, Portland, OR 97204
The Portland Water Bureau Material Manual provides technical and general product specifications, and lists products that have been reviewed and prequalified for use in the Portland water system for pressures of up to 150 psi (1034 kPa) unless otherwise stated. All other pressures will be outlined in specific project specifications.
Project specifications may supersede products presented in the Material Manual. Email PWB if you have questions about these materials. Updates to the manual are identified within the individual sections.
Water Materials requirements and preapproved products, 2012
Updated September 21, 2012