How many states currently have a UPC record in this dataset?
20 US jurisdictions have a current record under the UPC identifier. This count describes the dataset and is not a legal conclusion about every local jurisdiction.
Uniform Plumbing Code (UPC) State Adoption Reference
Review current Uniform Plumbing Code adoption records across 20 US jurisdictions, with editions, effective dates, amendments, and official references.
The table reports the latest active record per US jurisdiction in MeltPlan's source data. Confirm applicability with the authority having jurisdiction.
Current UPC records by state
| State | Base model code | Publisher | Effective | Adoption type | Reference |
|---|---|---|---|---|---|
| Alaska | 2018 Uniform Plumbing Code (UPC) | IAPMO | Apr 24, 2020 | Amended | Official source |
| Arizona | 2024 Uniform Plumbing Code (UPC) | IAPMO | Not listed | Standard | Not listed |
| California | 2024 Uniform Plumbing Code (UPC) | IAPMO | Jan 1, 2026 | Custom | Official source |
| Hawaii | 2018 Uniform Plumbing Code (UPC) | IAPMO | May 19, 2020 | Amended | Official source |
| Idaho | 2015 Uniform Plumbing Code (UPC) | IAPMO | Jan 1, 2018 | Custom | Official source |
| Iowa | 2024 Uniform Plumbing Code (UPC) | IAPMO | Mar 26, 2025 | Amended | Official source |
| Kansas | 2018 Uniform Plumbing Code (UPC) | IAPMO | Not listed | Standard | Not listed |
| Maine | 2021 Uniform Plumbing Code (UPC) | IAPMO | Jan 1, 2022 | Amended | Official source |
| Minnesota | 2018 Uniform Plumbing Code (UPC) | IAPMO | Dec 17, 2021 | Custom | Official source |
| Missouri | 2018 Uniform Plumbing Code (UPC) | IAPMO | Not listed | Standard | Not listed |
| Montana | 2021 Uniform Plumbing Code (UPC) | IAPMO | Jun 11, 2022 | Amended | Official source |
| Nebraska | 2018 Uniform Plumbing Code (UPC) | ICC | Sep 1, 2019 | Standard | Official source |
| Nevada | 2024 Uniform Plumbing Code (UPC) | IAPMO | Not listed | Standard | Not listed |
| New Jersey | 2021 Uniform Plumbing Code (UPC) | IAPMO | Sep 22, 2022 | Custom | Official source |
| New Mexico | 2021 Uniform Plumbing Code (UPC) | IAPMO | Jul 14, 2023 | Amended | Official source |
| North Dakota | 2018 Uniform Plumbing Code (UPC) | IAPMO | Apr 1, 2020 | Amended | Official source |
| Oregon | 2021 Uniform Plumbing Code (UPC) | IAPMO | Oct 1, 2023 | Custom | Official source |
| South Dakota | 2024 Uniform Plumbing Code (UPC) | IAPMO | Oct 28, 2025 | Amended | Official source |
| Texas | 2021 Uniform Plumbing Code (UPC) | IAPMO | Not listed | Standard | Not listed |
| Washington | 2021 Uniform Plumbing Code (UPC) | IAPMO | Mar 15, 2024 | Custom | Official source |
UPC adoption questions
Which UPC editions appear in the current records?
The edition years represented are 2024, 2021, 2018, 2015. A project may be governed by a different edition because of local amendments or transition rules.
Does a UPC state record apply in every city or county?
Not necessarily. Home-rule authority, local amendments, project type, occupancy, and enforcement dates may change which requirements apply.
How should I verify a UPC adoption?
Open the official source where one is listed, then confirm the adopted edition, amendments, effective date, and project jurisdiction with the authority having jurisdiction.