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Welcome to John’s Blog. Answers to frequently asked questions are periodically posted here. The objective is to share information about PVC pipe with readers as well as with utilities, design engineers and pipe installers. The blog provides the latest information on PVC pipe design, installation, and application for water and wastewater infrastructure projects.

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John Houle: Senior Technical Consultant, PVC Pipe Industry

John Houle holds a Master’s Degree in Civil Engineering from the University of Missouri and an MBA from the University of Oregon. He has more than 25 years of experience in the plastic pipe industry in applications engineering, market development, forensic analysis, technical writing, and standards development.

New C900 Standard for PVC Pipe

Posted By John Houle on May 10, 2017

In August 2016, AWWA published the latest edition of its C900 standard. C900-16 is more complicated than most standards, primarily because it now includes the large-diameter sizes previously found in the C905 standard. Since C900 now includes the full range of products, the C905 standard will no longer be published.


C900’s largest size changed from 12-inch in the old standard to 60-inch in the new one! 

To help with the transition, Uni-Bell has written an explanatory document called “Guide to Understanding the AWWA C900-16 Standard.” The 20-page Guide provides a thorough review of the revisions to C900. 

For a quick overview, there is also a one-page Tech Brief that gives a snapshot of the Guide’s contents. Click here for the Tech Brief.


To download the Guide, click here.