The Uniform Plumbing Code (UPC) reflects IAPMO’s experience and dedicated focus on plumbing systems and water efficiency.

Designated as an American National Standard, the Uniform Plumbing Code (UPC) is a model code developed by the International Association of Plumbing and Mechanical Officials …

The Uniform Plumbing Code (UPC) and Uniform Mechanical Code (UMC) from the International Association of Plumbing and Mechanical Officials (IAPMO) are on the record as the codes that …

The Plumbing Code, 2021 (UPC 2021) is a code produced by the International Association of Plumbing and Mechanical Officials (IAPMO). This document provides the foundation for many …

The provisions of this code shall apply to the erection, installation, alteration, repair, relocation, replacement, addition to, use, or maintenance of plumbing systems within this jurisdiction.

Dec 13, 2025 · The Uniform Plumbing Code (UPC) is a prescriptive model plumbing code predominantly used in the Western United States. Published by IAPMO, the UPC provides …

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May 4, 2023 · Introduced in Los Angeles in 1928 and formally published as the Uniform Plumbing Code in 1945, the UPC is developed to govern the installation and inspection of plumbing …

102.1 Conflicts Between Codes. 102.2 Existing Installations. 102.3 Maintenance. 102.4 Additions, Alterations, Renovations, or Repairs. 102.4.1 Building Sewers and Drains. 102.4.2 Openings. …