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National Clay Pipe Institute (NCPI)

The NCPI promotes the use of vitrified clay pipe for gravity sanitary sewers through education, research, government relations and technical support. The Institute's publications, videos and computer programs are available to engineers, agencies, contractors, students and others that are interested in building sanitary sewers having the longest possible useful life. Visit the NCPI Website.

The NCPI provides the following technical information:

  • Engineering Manual
  • Installation Handbook
  • Hydraulic Calculator
  • ASTM Standards
  • Tool Box
  • Videos
  • Tech Notes
  • Sewer Sense
  • Publication List
  • Members
  • Request Material


We feel it is important to be involved in the organizations that develop and maintain the high quality standards for products and personal conduct. As such, we are proud members of many major building industry trade organizations. Along with membership, many of our employees are in leadership positions with the associations in their region.