Skip navigation links
Standards Store
IAPMO Industry Standards
IAPMO National Standards
Contact Us
Skip navigation links
20-Day Public Review
Standards Application Form
Standards Review Committee
Indexes – Industry Standards
Downloadable Documents
Summaries of Changes (Comparisons)
Standards Brochure
Policies and Procedures
Standards Store
20-Day Public Review 

Standard designation


Comments Due By

Template Template for Submitting Public Review Comments NA
IAPMO IGC 154-2016 Shower and Tub/Shower Enclosures, Bathtubs with Glass Pressure-Sealed Doors, and Shower/Steam Panels 2016-10-02
IAPMO IGC 336-2016 Double Pipe Union Couplers 2016-10-02
IAPMO IGC 337-2016 Air Admittance Valves for High Back Pressure Environments 2016-10-02
IAPMO IGC 339-2016 Diverting Vent Terminals 2016-10-02
IAPMO PS 51-2016 Expansion Joints and Flexible Expansion Joints for DWV Piping Systems 2016-10-02
IAPMO PS 53-2016 Grooved Mechanical Pipe Couplings and Grooved Fittings 2016-10-02
IAPMO PS 59-2016 Wastewater Diverter Valves and Diversion Systems 2016-10-02

Note: In order to be considered, comments must be submitted using the template above. Comments not submitted using the template above will not be considered.

Input from stakeholders (e.g., inspection officials, product manufacturers, engineering professionals, and the public at large) is an important part of the IAPMO standards development process. Proposals for new IAPMO IGCs and non-consensus standards or changes to existing non-consensus standards are posted on this website for 20 days prior to publication

All stakeholders are invited to submit comments to the IAPMO Standards Review Committee (SRC) regarding the posted documents. The SRC will review ALL comments submitted and will address any substantiated health or safety issues raised, before the new or revised standards are published.

Comments should be submitted by e-mail to, using the template above. All comments must include the following:

  1. Name, company (if applicable), and contact information of commenter (including e-mail address).
  2. Specific technical issues and health and safety concerns related to the proposal.
  3. Supporting information substantiating the comments. E-mail attachments can be submitted in Word or PDF format.
  4. Proposed wording to address the technical, health, or safety issues to the satisfaction of the commenter.

Commenters will be notified regarding the date and time of the SRC meeting at which the comments will be considered. Commenters are encouraged to attend the meeting to participate in the discussion of their comments.

Comments on proposed revisions must relate to the revisions themselves. Commenters wishing to submit changes to other sections not part of the proposed revisions will be asked to resubmit their comments as a separate proposed change to the standard.

This forum provides an expedited opportunity for all IAPMO members and other stakeholders to give valuable input to the SRC without having to wait for IAPMO’s Annual Conference. It is in this way that all of us, working together, can continue to develop some of the best standards in the plumbing and mechanical industry.

Check this site monthly as proposals for new standards and changes to existing standards are added regularly. Click on the number designation of the documents below to open the PDF files with the proposals. If you wish to receive a notification e-mail when standards are posted on this site, please send a request to

If you have additional questions you may contact:

Charles Gross
V.P. of Standards Development
Tel: 1.909.472.4136 

Kyle Thompson, PE
Standards Development Engineer
Tel: 1.909.230.5534