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Every industry is subject to rules and regulations designed to protect workers and consumers. The construction industry is governed by a range of codes that builders must comply with to ensure safe and functional structures suitable for habitation, commercial use, and so on.

Plumbing code compliance systems govern plumbing systems and equipment within the larger scope of the construction industry. These codes regulate areas like design, installation, alteration, repair, and replacement of water supply, drainage, and venting systems.

When you become a professional plumber, you should be aware of two distinct code compliance systems. They are IPC and UPC.

What Is the IPC?

The International Plumbing Code (IPC) is published and governed by the International Code Council. It is updated every three years to reflect industry advances, and any interested party may propose changes, which code officials then vote on.

This is the most widely adopted plumbing code in the U.S. It is currently used in 37 states and the District of Columbia, as well as two territories (Guam and Puerto Rico). The IPC covers standards and practices for residential and commercial plumbing systems.

What Is the UPC?

The Uniform Plumbing Code (UPC) is published and governed by the International Association of Plumbing and Mechanical Officials. This code is popular in the western portion of the U.S. and has been adopted in 13 states (either statewide or in major jurisdictions).

Using a process accredited by the American National Standards Institute, this code system is revised every three years through union-supported consensus.

How Are the Two Systems Different?

The major difference between the two systems is that the IPC is prescriptive, while the UPC is slightly more progressive. The IPC prescribes exact specifications for materials, sizing, methods, and so on, with an overarching focus on safety and a penchant for preserving tradition. It’s the “if it ain’t broke, don’t fix it” approach.

The UPC, on the other hand, supports design innovation within set parameters, allowing for competitive systems and encouraging innovation and performance. The use of new materials and methods that curb material waste, reduce labor, save money, and increase efficiency helps drive interest in this code compliance system.

Is One Better Than the Other?

Although more states have adopted the IPC, thanks to long-term proven results, the UPC offers several attractive advantages.

Backed by quantifiable engineering data, UPC case studies have shown metrics like improved flow rates, reduced drop rates, lower initial capital costs, and greater performance gains (operational cost reduction) over time.

How Code Compliance Systems Affect Your Career

As a plumbing professional, it’s important to understand the code compliance system adopted by your state or jurisdiction, since it will likely be represented on licensing exams and you must comply with applicable codes in the course of your work.

It’s a good idea to study both to understand new industry developments and excel in your work.

If you’re interested in obtaining a plumbing license in your state of residence or neighboring states where you work, contact RocketCert now to discover the exam prep programs that best meet your needs.