About Plumbing Certification (USA and Canada)

Being the preferred listing agency of manufacturers and building officials, the IAPMO R&T brand and its reputation for quality are unparalleled in the industry. IAPMO R&T Marks of Conformity are widely recognized and represent the highest degree of integrity showing compliance with established codes and standards.

To date, IAPMO R&T has listed thousands of plumbing products. Examples include, but are not limited to:

  • Plumbing Fixture Fittings such as Faucets, Showerheads and Flexible Connectors
  • Bathtubs
  • Sinks
  • Toilets 
  • Backflow Preventers
  • Copper Tubing and Fittings 
  • Precast Concrete Products
  • Pipes and Fittings

These products are evaluated to not only the applicable North American product standards, but also for their compliance to:

  • Uniform Plumbing Code (UPC®) — IAPMO R&T is the only agency offering a true UPC®  shield, the only mark you need
  • All other related North American Plumbing Codes
  • National Plumbing Code of Canada

IAPMO and IAPMO R&T have been certifying plumbing products for compliance with standards governing their use since the 1940s.