Gas code in Iowa

Iowa has adopted NFPA 54 National Fuel Gas Code — current edition (presently 2024) (NFPA 54), effective March 26, 2025. The adopting authority is Iowa Department of Inspections, Appeals & Licensing (DIAL) — Plumbing & Mechanical Systems Board. Verified June 28, 2026.

Iowa regulates fuel gas piping under NFPA 54 (National Fuel Gas Code) rather than the IFGC; the State Mechanical Code (481 IAC ch. 426, amended Section 101.2) references 'NFPA 54, National Fuel Gas Code, current edition' and 'NFPA 58, Liquefied Petroleum Gas Code, current edition' in place of the IFGC. The referencing rule took effect March 26, 2025 (ARC 8914C); because it uses 'current edition' language it tracks the latest published NFPA edition (presently 2024), so the exact applicable edition year is imprecise.

It is the specific edition of a model code (for example the 2023 NEC, the 2021 IBC, or CSA C22.1:24) that a state or province has legally adopted and currently enforces. Codes are republished on roughly three-year cycles, and each jurisdiction adopts a new edition on its own schedule — often with amendments — so the edition in force varies by place and by discipline.

Not always. Many jurisdictions set a statewide or provincial baseline edition, but local building departments (the authority having jurisdiction, or AHJ) can amend it or enforce a different edition. Some states leave most adoption to local jurisdictions, and a few large cities such as Chicago and New York City run their own codes. Always confirm with your AHJ.

In the United States: the NEC (NFPA 70) for electrical, the ICC I-Codes (IBC/IRC) for building, the UPC (IAPMO) or IPC (ICC) for plumbing, the IMC/UMC for mechanical, the IFGC/NFPA 54 for fuel gas, and the IFC/NFPA 1 for fire. In Canada: the Canadian Electrical Code (CSA C22.1), the National Building, Plumbing and Fire Codes of Canada and their provincial editions, and CSA B149.1 for gas.

NFPA offers free read-only online access to many of its standards including the NEC, and the ICC publishes its I-Codes through a free online reading room. Canadian codes are typically published by CSA Group or the National Research Council and may require purchase or membership. Each result links to the official source.

Trade codes are copyrighted by their standards bodies (NFPA, ICC, IAPMO, CSA). This directory publishes only factual adoption data — which edition is in force, when it took effect, who the authority is, whether it is amended, and where to read it officially — and links you to the official source for the code text itself.