CODE DEVELOPMENT

 

MISSION AND VISION STATEMENT

IAPMO Codes and Standards provides innovative codes and standards solutions for the protection of the public’s health, safety and welfare. We address the world’s codes and standards needs to improve life for a better, more resilient tomorrow.
 

RECENT NEWS

IAPMO Solicits Public Comments on 2027 UPC, UMC
IAPMO is calling for formal public comments toward the development of the 2027 editions of UPC and UMC. All public comments must include the exact recommended wording as either new, revised or deleted text. In addition, the problem the recommendation is intended to resolve and the specific reason for making the comment must be stated.

Public comments may be submitted via the new IAPMO Codes Portal at the following URL: https://codeproposals.iapmo.org/ 
Instructions on how to submit public comments through the IAPMO Codes Portal can be obtained at the following URL: https://codes.iapmo.org/docs/IAPMO%20Instructions%20for%20Submitting%20Comments.pdf

No comments will be accepted after Jan. 17, 2025.

For questions about submitting comments for the UPC, contact Enrique Gonzalez, at (909) 230-5535 or enrique.gonzalez@iapmo.org. For questions about submitting comments for the UMC, contact Taylor Duran, at (909) 218-8126 or taylor.duran@iapmo.org


IAPMO SOLICITS PROPOSALS FOR THE 2027 NATIONAL STANDARD PLUMBING CODE - ILLUSTRATED (NSPC)

IAPMO is calling for formal code proposals toward the development of the 2027 edition of NSPC. All proposed changes must be submitted in electronic format to nspc@iapmo.org. If a standard is referenced, a copy of that standard must accompany the proposed code change that is submitted to the committee. 

No proposals will be accepted after the 5 p.m. EST deadline Feb. 28, 2025

For more information, please contact IAPMO NSPC staff at nspc@iapmo.org


2024 UPC/UMC REPORTS ON PROPOSALS

Interested parties are encouraged to download the ROPs via the following links:
2024 UPC Report on Proposals          2024 UMC Report on Proposals


2027 UPC/UMC CODE DEVELOPMENT TIMELINE
The 2027 UPC/UMC Code Development Timeline is now available for download.


ANSI-Accredited Development Process

With its Uniform Plumbing Code; Uniform Mechanical Code; Uniform Solar, Hydronic and Geothermal Code; Uniform Swimming Pool, Spa and Hot Tub Code; and Water Efficiency and Sanitation Standard (WE•Stand) 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.

Click here to learn more about the IAPMO Codes and Standards development process.

UPC and UMC Development Process
(Four Step Process)
USHGC, USPSHTC and WE•Stand Development Process
(Three Step Process)

 

 


Building True Consensus

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)
Archive revision information
2027 UPC Development Timeline
Code questions?
Additional information brochure

Uniform Mechanical Code (UMC)
Archive revision information
2027 UMC Development Timeline
Code questions?
Additional information brochure

Uniform Solar, Hydronics and
Geothermal Code (USHGC)
Archive revision information
2027 USHGC Development Timeline
Code questions?
Additional information brochure

Uniform Swimming Pool, Spa
and Hot Tub Code (USPSHTC)
Archive revision information
2027 USPSHTC Development Timeline
Code questions?
Additional information brochure

Water Efficiency & Sanitation Standard
(WE•Stand)
Archive revision information
2027 WE•Stand Development Timeline
Code questions?
Water Demand Calculator



National Standard Plumbing Code (NSPC)
Document information
Code questions?
Interpretation inquiries?
Additional information brochure

State-Codes based
on Uniform Codes
Additional information
State code & adoption questions?


Appendix H Private Sewage Disposal Systems

Read Only

Purchase Online

Appendix M Peak Water Demand Calculator

Read Only

Purchase Online

Geothermal Energy Systems and Ambient Temperature Loops

Read Only

Purchase Online

Sample legislation to adopt
an IAPMO code

 

Code Errata, Addendums, Tentative Interim Amendments & Formal Interpretations Available Here

Press Releases

Articles

2024-06-19 IAPMO Seeks Volunteers to Serve on 2026 WE•Stand Technical Committee

2024-06-07 IAPMO Seeks Technical Committee Members for 2027 USPSHTC, USHGC

2024-06-06 U.S. GSA Officially Recognizes Uniform Plumbing Code (UPC®)

2024-06-03 IAPMO Seeks UPC Task Group Members

2024-06-03 IAPMO Seeks UMC Task Group Members

2024-05-24 IAPMO Advances Development of 2027 Uniform Codes During Technical Committee Meetings

2024-03-26 IAPMO Seeks Public Input on Manual of Recommended Practice for Hydrogen Fuel Gas Piping

2024-03-20 IAPMO Publishes Manual of Recommended Construction Practices for Potable Water

2024-03-11 ASSE Seeks Working Group Members for Development of National Standard ASSE 1010

2024-03-05 California Approves Water Demand Calculator® as Alternate Standard for Sizing Water Supply Piping

2024-01-29 2024 National Standard Plumbing Code — Illustrated Now Available

2024-01-19 IAPMO and ASSE Offer Access to Library of Standards

2024-01-18 IAPMO Seeks Public Input on Manual of Recommended Construction Practices for Potable Water

2023-12-20 IAPMO Seeks Technical Subcommittee Members for Development of American National Standard IAPMO Z1388

2023-12-18 ASSE Seeks Working Group Members to Update National Standard ASSE/IAPMO 6000

2023-10-26 Houston Adopts Uniform Plumbing Code and Uniform Mechanical Code

2023-10-25 ASSE Seeks Working Group Members for Development of National Standard ASSE 1004 and ASSE 1079

2023-10-12 IAPMO Seeks Public Input on Manual of Recommended Practice for Medical Gas Resiliency

2023-10-02 IAPMO Seeks Members for Task Group for Hot Water Recirculation Design, Installation, Commissioning, and Operations

2023-09-07 IAPMO Seeks Technical Subcommittee Members for Development of American National Standard IAPMO Z1393

2023-09-06 IAPMO Publishes Spanish Versions of 2021 Uniform Plumbing Code and Uniform Mechanical Code

2023-09-06 IAPMO publica versiones en español de 2021 del Código Uniforme de Plomería y Código Uniforme de mecánica

2023-09-01 Report on Comments Toward Development of 2023 WE·Stand Now Available for Online Download

2023-09-01 Report on Comments Toward Development of 2024 USHGC, USPSHTC Now Available for Online Download

2023-08-29 IAPMO Seeks Technical Subcommittee Members for Development of National Standard IAPMO Z1390 for Adult Changing Stations

2023-08-22 IAPMO Makes Tentative Interim Amendment Available for Public Comment

2023-07-20 IAPMO Advances Development of 2023 WE•Stand During Technical Committee Meetings

2023-07-20 IAPMO Advances Development of 2024 Solar, Hydronics and Geothermal Code and 2024 Swimming Pool, Spa and Hot Tub Code During Technical Committee Meetings

2023-07-05 IAPMO Solicits Proposals for 2027 UPC, UMC

2023-07-05 IAPMO Launches the IAPMO Codes Portal

2023-07-03 IAPMO Makes Tentative Interim Amendment (TIA) Available for Public Comment

2023-06-16 IAPMO and ESPRI Seek Public Initial Input on Manual of Water Quality for Plumbing Industry Professionals and Building Managers

2023-06-15 IAPMO’s Water Demand Calculator™ Version 2.2 Available for Download

2018 Uniform Code Highlights

Not All Model Codes Are Created Equally

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

 

Click "Read More" for additional Press Releases & Articles

 

MISSION AND VISION STATEMENT

IAPMO Codes and Standards provides innovative codes and standards solutions for the protection of the public’s health, safety and welfare. We address the world’s codes and standards needs to improve life for a better, more resilient tomorrow.
 

RECENT NEWS

IAPMO Solicits Public Comments on 2027 UPC, UMC
IAPMO is calling for formal public comments toward the development of the 2027 editions of UPC and UMC. All public comments must include the exact recommended wording as either new, revised or deleted text. In addition, the problem the recommendation is intended to resolve and the specific reason for making the comment must be stated.

Public comments may be submitted via the new IAPMO Codes Portal at the following URL: https://codeproposals.iapmo.org/ 
Instructions on how to submit public comments through the IAPMO Codes Portal can be obtained at the following URL: https://codes.iapmo.org/docs/IAPMO%20Instructions%20for%20Submitting%20Comments.pdf

No comments will be accepted after Jan. 17, 2025.

For questions about submitting comments for the UPC, contact Enrique Gonzalez, at (909) 230-5535 or enrique.gonzalez@iapmo.org. For questions about submitting comments for the UMC, contact Taylor Duran, at (909) 218-8126 or taylor.duran@iapmo.org 


 

IAPMO SOLICITS PROPOSALS FOR THE 2027 NATIONAL STANDARD PLUMBING CODE - ILLUSTRATED (NSPC)

IAPMO is calling for formal code proposals toward the development of the 2027 edition of NSPC. All proposed changes must be submitted in electronic format to nspc@iapmo.org. If a standard is referenced, a copy of that standard must accompany the proposed code change that is submitted to the committee. 

No proposals will be accepted after the 5 p.m. EST deadline Feb. 28, 2025

For more information, please contact IAPMO NSPC staff at nspc@iapmo.org


2024 UPC/UMC REPORTS ON PROPOSALS

Interested parties are encouraged to download the ROPs via the following links:
2024 UPC Report on Proposals          2024 UMC Report on Proposals


2027 UPC/UMC CODE DEVELOPMENT TIMELINE
The 2027 UPC/UMC Code Development Timeline is now available for download.


ANSI-Accredited Development Process

With its Uniform Plumbing Code; Uniform Mechanical Code; Uniform Solar, Hydronic and Geothermal Code; Uniform Swimming Pool, Spa and Hot Tub Code; and Water Efficiency and Sanitation Standard (WE•Stand) 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.

Click here to learn more about the IAPMO Codes and Standards development process.

UPC and UMC Development Process
(Four Step Process)
USHGC, USPSHTC and WE•Stand Development Process
(Three Step Process)

 

 


Building True Consensus

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)
Archive revision information
2027 UPC Development Timeline
Code questions?
Additional information brochure

Uniform Mechanical Code (UMC)
Archive revision information
2027 UMC Development Timeline
Code questions?
Additional information brochure

Uniform Solar, Hydronics and
Geothermal Code (USHGC)
Archive revision information
2027 USHGC Development Timeline
Code questions?
Additional information brochure

Uniform Swimming Pool, Spa
and Hot Tub Code (USPSHTC)
Archive revision information
2027 USPSHTC Development Timeline
Code questions?
Additional information brochure

Water Efficiency & Sanitation Standard
(WE•Stand)
Archive revision information
2027 WE•Stand Development Timeline
Code questions?
Water Demand Calculator



National Standard Plumbing Code (NSPC)
Document information
Code questions?
Interpretation inquiries?
Additional information brochure

State-Codes based
on Uniform Codes
Additional information
State code & adoption questions?


Appendix H Private Sewage Disposal Systems

Read Only

Purchase Online

Appendix M Peak Water Demand Calculator

Read Only

Purchase Online

Geothermal Energy Systems and Ambient Temperature Loops

Read Only

Purchase Online

 

Sample legislation to adopt
an IAPMO code

 

Code Errata, Addendums, Tentative Interim Amendments & Formal Interpretations Available Here

Press Releases

Articles

2024-06-19 IAPMO Seeks Volunteers to Serve on 2026 WE•Stand Technical Committee

2024-06-07 IAPMO Seeks Technical Committee Members for 2027 USPSHTC, USHGC

2024-06-06 U.S. GSA Officially Recognizes Uniform Plumbing Code (UPC®)

2024-06-03 IAPMO Seeks UPC Task Group Members

2024-06-03 IAPMO Seeks UMC Task Group Members

2024-05-24 IAPMO Advances Development of 2027 Uniform Codes During Technical Committee Meetings

2024-03-26 IAPMO Seeks Public Input on Manual of Recommended Practice for Hydrogen Fuel Gas Piping

2024-03-20 IAPMO Publishes Manual of Recommended Construction Practices for Potable Water

2024-03-11 ASSE Seeks Working Group Members for Development of National Standard ASSE 1010

2024-03-05 California Approves Water Demand Calculator® as Alternate Standard for Sizing Water Supply Piping

2024-01-29 2024 National Standard Plumbing Code — Illustrated Now Available

2024-01-19 IAPMO and ASSE Offer Access to Library of Standards

2024-01-18 IAPMO Seeks Public Input on Manual of Recommended Construction Practices for Potable Water

2023-12-20 IAPMO Seeks Technical Subcommittee Members for Development of American National Standard IAPMO Z1388

2023-12-18 ASSE Seeks Working Group Members to Update National Standard ASSE/IAPMO 6000

2023-10-26 Houston Adopts Uniform Plumbing Code and Uniform Mechanical Code

2023-10-25 ASSE Seeks Working Group Members for Development of National Standard ASSE 1004 and ASSE 1079

2023-10-12 IAPMO Seeks Public Input on Manual of Recommended Practice for Medical Gas Resiliency

2023-10-02 IAPMO Seeks Members for Task Group for Hot Water Recirculation Design, Installation, Commissioning, and Operations

2023-09-07 IAPMO Seeks Technical Subcommittee Members for Development of American National Standard IAPMO Z1393

2023-09-06 IAPMO Publishes Spanish Versions of 2021 Uniform Plumbing Code and Uniform Mechanical Code

2023-09-06 IAPMO publica versiones en español de 2021 del Código Uniforme de Plomería y Código Uniforme de mecánica

2023-09-01 Report on Comments Toward Development of 2023 WE·Stand Now Available for Online Download

2023-09-01 Report on Comments Toward Development of 2024 USHGC, USPSHTC Now Available for Online Download

2023-08-29 IAPMO Seeks Technical Subcommittee Members for Development of National Standard IAPMO Z1390 for Adult Changing Stations

2023-08-22 IAPMO Makes Tentative Interim Amendment Available for Public Comment

2023-07-20 IAPMO Advances Development of 2023 WE•Stand During Technical Committee Meetings

2023-07-20 IAPMO Advances Development of 2024 Solar, Hydronics and Geothermal Code and 2024 Swimming Pool, Spa and Hot Tub Code During Technical Committee Meetings

2023-07-05 IAPMO Solicits Proposals for 2027 UPC, UMC

2023-07-05 IAPMO Launches the IAPMO Codes Portal

2023-07-03 IAPMO Makes Tentative Interim Amendment (TIA) Available for Public Comment

2023-06-16 IAPMO and ESPRI Seek Public Initial Input on Manual of Water Quality for Plumbing Industry Professionals and Building Managers

2023-06-15 IAPMO’s Water Demand Calculator™ Version 2.2 Available for Download

2018 Uniform Code Highlights

Not All Model Codes Are Created Equally

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

 

Click "Read More" for additional Press Releases & Articles

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