2021 Uniform Plumbing Code (UPC®) The 2021 Uniform Plumbing Code (UPC®) sets the standard for modern plumbing practices, incorporating the latest technologies and safety measures to protect public health. As the seventh edition developed through the ANSI consensus process, it holds the designation of an American National Standard, ensuring credibility and broad industry acceptance. This edition reflects the collective expertise of professionals from every corner of the plumbing and construction industry—including inspectors, contractors, manufacturers, engineers, researchers, and everyday users. Its goal is to promote safe, efficient, and innovative plumbing systems, while allowing room for growth and advancement in the field.
