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.

To ensure that all affected parties and stakeholders have the opportunity to provide their input and comment before final approval by the standards committee, public participation is encourage and welcomed.

The draft standards listed below are currently offered for public review. If you wish to submit public comments, please download the template for comments and submit it to before the submission deadline.


Standard Designation

Title Comments Due By
Template Template for Submitting Public Review Comments NA
IAPMO Z124.5
Plastic Toilet Seats January 15, 2024
IAPMO Z124.7 Prefabricated Plastic Spa Shells January 15, 2024
IAPMO Z124.8 Plastic Liners for Bathtubs and Shower Receptors January 15, 2024
IAPMO Z1000 Prefabricated Septic Tanks January 15, 2024
IAPMO Z1088 Pre-Pressurized Water Expansion Tanks January 15, 2024

To request a copy of any or all of the drafts listed above, please contact