THE Sustainable Sewer Pipe

The National Clay Pipe Institute is a not-for-profit organization dedicated to research, education and leadership in the vitrified clay pipe sanitary sewer industry. Learn more

sustainable sewer pipe, longest-lasting pipe

Clay – Shale – Water. In 2011, NCPI became the buried infrastructure industry to complete an ISO 14001-Compliant certification.

Natural materials, naturally long-lasting. Find Out More

Clay pipe has been the preferred sewer pipe material for over 6,000 years.

Building on 6,000 Years of Experience
Find Out About Our History in the US

VCP is the only modern pipe material that can be cleaned using all mechanical and high-pressure methods

Preferred by Operations & Maintenance Professionals Find Out More
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We offer the unique perspective, history and knowledge of the longest-serving and longest-lasting pipe product available. click here for proof

The National Clay Pipe Institute is a not-for-profit technical resource for design, installation & operation of VCP gravity sewer systems.

The National Clay Pipe Institute is a

not-for-profit technical resource for design,

installation & operation of VCP gravity sewer systems.

Our Featured Projects

Do you have a project we can feature here? Please email us.

Our Member Companies

Our Member Companies

“The long life and superior maintenance options make VCP the best long-term value for gravity sanitary sewer lines.”

Jeff Boschert
NCPI President

At NCPI, we are united by a common goal and passion for expertise in design, research, education and leadership.

With over 100-years of research, publication and education, NCPI has extensive experience and a unique knowledge base.

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VITRIFIED CLAY PIPE ENGINEERING MANUAL

NCPI’s VCP Engineering Manual is an authoritative resource for systems engineers, designers and maintenance professionals.

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VCP Installation & Inspection Handbook

The NCPI Installation & Inspection Handbook is a quick reference for contractors, inspectors and engineers.

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VCP Operations & Maintenance Handbook

Reduce SSOs through aggressive cleaning! See how in the NCPI Operations & Maintenance Handbook.

Why NCPI?

We’re dedicated to your success in designing
installing & maintaining VCP lines in your system

Some quick facts about NCPI & VCP

6,000 Years

Clay pipe has been used in sewers for over 6,000 years, starting in Ephesus, in what is now Turkey.

100+ Years

NCPI has been a research institute for over 100-years. It was the first pipe material group to establish standards with ASTM.

5 Largest

Five of the six largest U.S. cities specify vitrified clay pipe.