| States adopting the UPC 2018 | With Amendments | Without Amendments |
The Uniform Plumbing Code 2018 (UPC 2018) is a model code produced by the International Association of Plumbing and Mechanical Officials (IAPMO). This document provides the foundation for many state and city codes. The UPC 2018 combined with local jurisdiction amendments form the state codes. Adopting jurisdictions include Alaska, California, Hawaii, Iowa, Minnesota, Montana, Nevada, North Dakota, and Washington.