What is the 2020 WE●Stand and what does it address?

The purpose of this standard is to provide minimum requirements to optimize water use practices attributed to the built environment while maintaining protection of the public health, safety and welfare. The need for this standard is in recognition that with increasing demand, constrained infrastructure and supplies, climate change, and pervasive droughts globally, there is a critical need to reduce water consumption attributed to the built environment through conservation and reuse. With this come increased risks to public health, safety, and building systems performance. This standard provides minimum requirements that optimize built environment water use practices and corresponding provisions that maintain protection to public health, safety, and welfare.

2020 WE•Stand NEWS


2021 We•Stand Report on Comments Now Available (click here).


No comments were received to the 2020 edition of the We•Stand.



IAPMO's Water Efficiency and Sanitation Standard (We•Stand), introduced in 2018, is the first-ever standard to focus solely on achieving safe and efficient water use in both residential and non-residential buildings. Developed by an expert technical committee of 29 industry leaders -- experienced and knowledgeable professionals -- We•Stand provides prescriptive guidance for advanced water-saving technologies including rainwater harvesting, composting toilets and greywater recycling, and can provide relief for jurisdictions facing drought. It is a standard that can be adopted by any community, including those who do not use the IAPMO Uniform Plumbing and Mechanical Codes.


As with all IAPMO codes, We•Stand was intended to be designated as an American National Standard (ANS). It came to our attention during a recent internal audit that due to an administrative error, the forms required to achieve this designation were not completed and submitted. It is a regrettable error that in no way takes away from the quality of the code or the adoption of the standard, which meets the requirements of a consensus standard. 


We•Stand is updated every three years, and the 2020 edition is currently under review to achieve the designation of an American National Standard. Given the high bar we set for ourselves, the critical importance of third-party validation for our consensus process and what this standard means to communities battling significant drought impacts, we deeply regret this error. We have made process improvements to ensure that we won't repeat this error going forward. 


A copy of the document can be obtained by clicking on WE-Stand 202x

The deadline to submit a comment is September 6, 2021.


If you would like to submit a comment or have any questions, please contact Taylor Costea by phone at (909) 218-8126 or by email at



2023 WE•Stand NEWS


2023 WE•Stand Code Cycle - IAPMO is calling for formal code proposals toward the development of the 2023 edition. Click on the link below to submit your online proposals.