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What is the 2027 UPC?
The UPC established minimum requirements and standards for the protection of the public health, safety and welfare.   101.2 Scope. The provisions of this code shall apply to the erection, installation, alteration, repair, relocation, replacement, addition to, use, or maintenance of plumbing systems within this jurisdiction.
What does the UPC address?
Includes all potable water, building supply, and distribution pipes; all plumbing fixtures and traps; all drainage and vent pipes; and all building drains, and building sewers, including their respective joints and connections, devices, receptors, and appurtenances within the property lines of the premises and shall include potable water piping, potable water treating or using equipment, medical gas and medical vacuum systems, liquid and fuel gas piping, and water heaters and vents for same.    Table of Contents
Archived Revision Information
View archived proposals, comments and other records, related to the development of this edition.
Tentative Interim Amendments
Tentative Interim Amendments (TIAs) are proposals to add or delete text immediately from the Code. To accomplish this, any interested party must submit a proposal indicating the proposed change along with their substantiation divided into two parts; the first part indicating the technical merits of the proposed change followed by a statement as to the emergency nature of the proposal.

Below are links to instructions on how to properly submit a TIA, past and present TIA’s for public comment, and TIAs that have gone through the TC balloting process and have been acted upon by the Standards Council.

Proposed TIAs
Press Releases
Standards Council Decisions

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Formal Interpretations

IMPORTANT NOTICE: IAPMO’S Technical Question Service is meant to provide information on and assistance in accessing and understanding IAPMO’s codes. Clarifications and opinions contained in responses provided in fulfilling this service do constitute Formal Interpretations issued pursuant to IAPMO’s Regulations Governing Committee Projects. Any opinion expressed, therefore, is the personal opinion of the responder and does not necessarily represent the official position of IAPMO or its Technical Committees. In addition, responses provided are not intended, nor should they be relied upon, to provide professional consultation or services.

Current Displayed Edition: 2027

Current Displayed Edition: 2027

Current Displayed Edition: 2027

Staff Liaison

Committee Scope and Responsibility

As defined by the Regulations Governing Committee Projects, the Technical Correlating Committee (TCC) is the consensus body responsible for the development and revision of any document or documents emanating from a Technical Committee Project (such as the Uniform Plumbing, Mechanical, Solar, and Swimming Pool Codes). All persons wishing to participate on the TCC must complete an application for Technical Committee Membership (see link below), including a resume of qualifications. Once an application (and resume) has been received by IAPMO, it is forwarded to the Standards Council Secretary for consideration by the Standards Council.

An important function of the Standards Council is to maintain a balance of interest classifications on the TCC.

Those classifications are:

Enforcing AuthorityInstaller/Maintainer
Research/Standards/Testing LaboratorySpecial Expert

Once appointed to the TCC, each member is subject to annual review and reappointment. It is the responsibility of each member to participate and act in accordance with the Regulations Governing Committee Projects.

The roster (linked above) are divided into three columns: Name, Representation, and Classification. Committee members are arranged by classification for ease of identification.

For a more detailed explanation of responsibilities of the Technical Correlating Committee, please refer to Section 3 of the Regulations Governing Committee Projects.