Navigating U.S. Plumbing Code Changes, Part 1
2024 is a special year — it’s a code year!
2024 is a "code year" for the U.S. plumbing industry, which means it's time to submit and review changes to the model plumbing codes.
The U.S. follows two major model plumbing codes: the International Plumbing Code (IPC) developed by the International Code Council (ICC), and the Uniform Plumbing Code (UPC) developed by the International Association of Plumbing and Mechanical Officials (IAPMO). The next editions of these codes will be published in 2027, so the code developers will be reviewing proposed changes over the next three years. Both organizations work independently and, although the processes and schedules are quite similar, there are not-so-subtle differences that are important to keep in mind. During code hearings, technical committees review changes, listen to arguments, and decide whether to accept, modify, or reject the proposals.
Because of the number of codes it publishes, the ICC separates the codes into two groups (A and B) and compresses the code update process for each group into two hearings within the "code year", followed by a meeting for both groups in the third year (currently, 2026) before publication. On the other hand, IAPMO takes two years to develop its plumbing code, with one hearing per year, in the spring, skipping the year before publication. So, if you want to make changes to the 2027 editions, mark your calendar for three meetings in 2024 and one meeting per code publisher in 2025 and 2026.
Planning your code change submissions is crucial. Here are the top five tips for success:
Meet the deadlines — In 2024, ICC's deadline for submitting change proposals was January 8 and IAPMO's was January 12. For the next cycle, targeting 2030, the proposal submission deadlines will be in early January 2027.
Use the correct (or accepted) code language — Each code has its own conventions, and not following them can lead to rejection for editorial reasons.
Attend the hearings in person or send a representative — You'll have a short time at the hearings (usually 2 min per proposal) to provide testimony supporting each proposal.
Know who might oppose your proposal beforehand — Understand the competitive landscape of the market.
Be ready for an initial "Reject" decision — Know the next steps when the committee rejects your proposal.
Being well prepared and understanding the process will help you navigate the complexities of the code update process. Following these steps will ensure your proposals get the attention they deserve.