With its Uniform Plumbing Code, Uniform Mechanical Code, Uniform Solar Energy, Hydronic and Geothermal Code and Uniform Swimming Pool, Spa and Hot Tub Code designated as American National Standards, IAPMO is proud to utilize an open consensus process accredited by the American National Standards Institute (ANSI) in its code development practice.
IAPMO gathers the largest assembly of plumbing and mechanical experts in the world at its annual education and business conference, where anyone — members and non-members alike — can have a voice and a vote on proposed changes to the code.
The purpose of the IAPMO code development process is to ensure the continued development and maintenance of the Uniform Codes with the following goals in the forefront:
- Effectiveness in preserving the public health, safety, and welfare.
- The timely evaluation and recognition of technological developments pertaining to construction regulations.
- A consensus process, which provides for the open discussion of proposals by all parties who wish to participate.
IAPMO urges its members and other interested parties to get involved in the code development process to ensure that these goals are maintained. Installers, plumbing and mechanical officials, the construction industry, engineers, and manufacturers all benefit from a cooperative effort in developing codes.
Click on the following covers to go directly to the individual document development page
Uniform Plumbing Code (UPC)
Uniform Mechanical Code (UMC)
Uniform Solar, Hydronics and
Geothermal Code (USHGC)
Uniform Swimming Pool, Spa
and Hot Tub Code (USPSHTC)
Water Efficiency and Sanitation Standard (We-Stand)
National Standard Plumbing Code (NSPC)
on Uniform Codes
Sample legislation to adopt
a IAPMO code
TIA HEARING INFORMATION
In accordance with the IAPMO Governing Committee Projects, proposed TIAs UMC TIA 008-18, UPC TIA 004-18, and UPC TIA 005-18 which have been submitted for processing pursuant to Section 5-1 of the Regulations, will be automatically docketed as an appeal on the agenda of the IAPMO Standards Council. Any party may advocate their position before the Council. Please note that parties wishing to address the Council may do so via teleconference. Parties wishing to address the Council shall notify the Council Secretary, Ms. Gaby Davis at email@example.com, no later than 48 hours prior to the Council meeting. Although not required, individuals wishing to advocate a position are encouraged, to the extent practicable, to file written submission in general conformance with Sections 1-6.3 and 1-6.4 of the Regulations in advance of the meeting at which action will be considered. The proposed TIAs will be heard by the IAPMO Standards Council on February 27, 2020 at 8:30 am Pacific (11:30 am Eastern). When an automatically docketed appeal has not been pursued by any party, the Council will not consider the matter as an appeal.
2021 UPC and UMC PETITION INFORMATION
Three petitions to the IAPMO Board of Directors have been timely filed with the Petitions Clerk which relate to the issuance of the 2021 edition of the Uniform Mechanical Code and Uniform Plumbing Code. If an interested party intends to participate in the hearing or submit a written response, s/he should notify the Petitions Clerk upon filing a written response by January 22, 2020. Click here for more information.
STANDARDS COUNCIL APPEALS INFORMATION
The Standards Council appeals decisions are now available and can be obtained here. Parties wishing to file a petition shall notify the Council Secretary, Ms. Gaby Davis at firstname.lastname@example.org no later than December 16, 2019. Written petitions to the Board must be received by January 6, 2020.
ASK A CODE QUESTION??
Code Errata, Addendums, Tentative Interim Amendments & Formal Interpretations Available Here
2019-12-05 IAPMO Publishes IAPMO/ISO 30500 as National Adoption Standard for the US and Canada
2019-11-21 IAPMO Makes Two Tentative Interim Amendments (TIA) Available for Public Comment
2019-11-20 IAPMO Seeks Technical Committee Members for 2024 UPC and UMC
2019-11-18 IAPMO Codes Mobile App Now Available for Download
2019-11-15 IAPMO Makes New Tentative Interim Amendment (TIA) Available for Public Comment
2019-10-25 IAPMO Makes Three Tentative Interim Amendments (TIA) Available for Public Comment
2019-10-25 IAPMO Seeks UMC Legionella Task Group Members
2019-10-21 IAPMO Makes New Tentative Interim Amendment (TIA) Available for Public Comment
2019-10-10 IAPMO Solicits Public Comments for 2021 Uniform Solar, Hydronics and Geothermal, Swimming Pool, Spa and Hot Tub Codes
2019-09-09 Report on Proposals (ROP) Toward Development of 2021 USHGC, USPSHTC Now Available for Online Download
2019-09-06 New Jersey Adopts 2018 National Standard Plumbing Code
2019-08-21 Report on Comments Toward Development of 2021 UPC and UMC Now Available for Online Download
2019-08-13 IAPMO Seeks USPSHTC Slip-Resistance Task Group Members
2019-08-13 IAPMO Seeks USHGC Hydronics Task Group Members
2019-07-02 2019 California Plumbing Code, California Mechanical Code Now Available
2019-06-24 IAPMO Advances Development of 2021 Solar, Hydronics & Geothermal Code and Swimming Pool, Spa & Hot Tub Code During Technical Committee Meetings
2019-06-19 St. Louis County Adopts UPC, Provisions of Two Other Uniform Codes
2019-05-20 IAPMO Code Change Monographs Now Available for the USHGC and USPSHTC
2019-05-15 IAPMO Advances Development of 2021 Uniform Codes During Technical Committee Meetings
2019-03-25 IAPMO Code Change Monographs Now Available
2019-03-19 IAPMO Seeks Technical Correlating Committee Members
2019-03-13 National Standard Plumbing Code Public Hearing Set for July 11, 2019
2019-03-08 IAPMO Seeks Technical Subcommittee Members for Development of National Standards IAPMO Z1115 and IAPMO Z1349
2019-02-07 IAPMO Seeks Technical Subcommittee Members for Development of Z1167 Standard as a U.S National Standard for Solid Waste Containment Interceptors
2018-10-29 IAPMO 2021 Solar Energy, Hydronic and Geothermal & Swimming Pool Code Proposals
2018-10-29 IAPMO 2021 Solar Pool TC
2018-08-31 IAPMO 2021 UPC & UMC Public Comment
2018-08-23 IAPMO UPC & UMC ROP
2018-08-22 IAPMO 2018 USHGC & USPSHTC
2021 UPC & UMC CODE Timeline
2018 Uniform Code Highlights
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Model Codes Bring Simplicity, Order to Plumbing Engineer’s Work
How Stakeholders Can Effectively Participate in the Development of Codes and Standards
Standards and Model Codes: A Working Relationship
Circuit Venting Problem Solved: Methods, Connections and More
Plumbing Vent System in Multi-story Building
Fire and Smoke Dampers – The First Line of Defense
The Formation of PERC and the Drainline Carry Research Project
Working to Keep Building Water Systems Safe and Efficient – The Vital Role of the Plumbing Industry