Iowa — plumbing code & licensing
Verified
The code
| Code family | UPC |
| Edition in force | 2024 UPC (641 IAC ch. 25) |
| Effective date | 2025-03-26 |
| Adopted by | Plumbing and Mechanical Systems Board (Iowa Code section 105.4) |
| Adoption source | https://rules.iowa.gov/Notice/Details/8913C |
| State amendments | Amendments ride in the adoption document itself — https://rules.iowa.gov/Notice/Details/8913C |
Licensing
| Model | state individual licensing plus contractor licensing |
| Authority | Plumbing and Mechanical Systems Board, Department of Inspections, Appeals, and Licensing (DIAL) |
| Licensing source | https://dial.iowa.gov/licenses/building/plumbing-mechanical/plumbing-licensure/contractor-license |
| License classes | https://dial.iowa.gov/licenses/building/plumbing-mechanical/plumbing-licensure/licensing-period-fees |
Permits & inspections
641-25.4(1) amendment: local jurisdictions may administer permit, inspection, testing and enforcement provisions; those provisions are not administered by the Plumbing and Mechanical Systems Board or the state
How this record was verified
| Adoption | Verified |
| Amendments | Verified |
| Licensing | Verified |
| Permits & inspections | Verified |
Working notes
ARC 8913C rescinded and re-adopted 641 ch. 25; 641-25.1 adopts 2024 UPC sections 101-102, chs. 2-17 and Appendices A and M with amendments; local jurisdictions may not adopt other plumbing codes (641-25.2). Licensing administration is DIAL / PMSB (not Public Health) per current DIAL pages, though the IAC chapter still carries the 641 Public Health agency number.
Reference only. Compiled from the cited official sources as of the date shown; adoptions and rules change. Confirm with the authority having jurisdiction before designing or permitting work.