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Portland Water Bureau

From forest to faucet, we deliver the best drinking water in the world.


1120 SW Fifth Ave, Suite 600, Portland, OR 97204

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The Material Manual

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.

Material Manual, Portland Water Bureau

Water Materials requirements and preapproved products, 2014

Materials List

Updated March 5, 2014, Weblinks updated Nov 20, 2014