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WaterSense

Homes Specification Background

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The WaterSense Homes specification was first released in 2009.  Version 1 was in effect from 2009 through 2021.  Work to develop Version 2 of the specification began in 2018 and was completed in 2021. The sections below have more information about the homes specification development process for each version of the program, including final, draft specifications, public comments on the draft specification, EPA's response to the public comments, and questions and answers.

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Version 2.0 - Draft

On April 18, 2019, EPA released the WaterSense Draft Specification for Homes, Version 2.0, which aims to further promote residential water efficiency and facilitate market transformation in home construction. The specification is applicable to single-family homes and multifamily buildings. EPA will require homes that earn the WaterSense label to be at least 30 percent more water-efficient than a comparable home using typical new construction. To confirm that homes meet this efficiency threshold, EPA will require the homes to be certified by an approved Home Certification Organization (HCO) using a WaterSense approved certification method.

The documents below provide more information about the draft specification and the supporting program.

EPA also developed a factsheet(2 pp, 424 K, About PDFthat summarizes its proposed changes to the WaterSense labeled homes program.  

On May 14, 2019, EPA held a teleconference and webinar with stakeholders to discuss the draft documents released as part of Version 2.0 of the WaterSense labeled homes program. Register to view a recording EXITof the webinar. The presentation slides and a summary of the meeting are provided below.

Interested parties had the opportunity to submit comments on the draft WaterSense labeled homes program, Version 2.0 through June 18, 2019. The public comments EPA received by that date are provided below.

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Version 2.0 - Notice of Intent and Concept Paper

On February 15, 2018, WaterSense released a Notice of Intent (NOI) to develop version 2.0 of the specification and certification requirements for WaterSense labeled homes. 

On March 14, 2018, EPA hosted a teleconference and webinar with stakeholders to discuss the NOI. The presentation slides and a summary of the meeting are provided below.

On October 24, 2018,  WaterSense released a concept paper outlining possible updates that may be included in Version 2.0.  The concept paper describes proposed changes to requirements for homes to earn the WaterSense label and for organizations to be eligible to oversee the certification and labeling of homes to earn the WaterSense label. The concept paper considered comments received in response to the Notice of Intent (NOI) to revise the WaterSense Specification for Homes and serves as an update to interested parties as WaterSense prepares a draft specification and certification system for release in 2019.

On November 13, 2018, EPA held a webinar with stakeholders to discuss the concept paper. Register to view a recording EXITof the webinar.

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Version 1.2 - Final Specification  

Version 1.2 of the WaterSense New Home Specification went into effect July 24, 2014. Version 1.2 contains minor revisions to Version 1.1 that effectively expand the pool of eligible irrigation professionals who can design or install and audit the irrigation system to any irrigation professional certified by a WaterSense labeled program. 

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Version 1.1 - Final Specification

WaterSense released Version 1.1 of the WaterSense New Home Specification on August 30, 2012, which was effective through July 23, 2014. Version 1.1 revisions expanded the scope to enable homes in multi-family buildings to earn the label, updated product requirements, and adjusted landscape criteria. Below are the materials and documentation supporting this version of the specification.

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Version 1.1 - Draft Specification

On March 22, 2012, WaterSense issued the Draft Version 1.1 WaterSense New Home Specification. Below are the final draft documents, public comments, and EPA's response to comments on the draft.

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Notice of Intent to revise Version 1.0 

On October 21, 2011, WaterSense released a notice of intent (NOI) to modify the 2009 WaterSense Single–Family New Home Specification to gather comments on the proposed modifications and information on the outstanding issues. Below are the documents pertaining to this NOI.

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Version 1.0 - Final Specification 

Below are the final documents supporting the 2009 WaterSense Single–Family New Home Specification (Version 1.0), which was effective through December 31, 2012.

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Version 1.0 - Second Draft Specification

WaterSense released the Revised Draft Water–Efficient Single–Family New Home Specification on May 8, 2009. Below is a list of documents supporting the second draft.

EPA held two public meetings to discuss the Revised Draft Water–Efficient Single–Family New Home Specification on June 10, 2009, in Washington, D.C., and on June 22, 2009, via webinar. For more information, please see the public meeting summary (PDF) (26 pp, 276 K, About PDF) and the public meeting presentation (PDF) (25 pp, 532 K, About PDF).

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Version 1.0 - First Draft Specification

EPA released the original Draft Water–Efficient Single–Family New Home Specification on May 22, 2008. Below are the documents supporting this first draft.

EPA held an online public meeting to discuss the first Draft Water–Efficient Single–Family New Home Specification on June 18, 2008. For more information, please see the public meeting summary (PDF) (5 pp, 241 K, About PDF).

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Landscape Water Budget Tool

EPA’s Water Budget Tool supports Section 4.1.1 of the WaterSense New Home Specification.

WaterSense has revised the Water Budget Tool to correspond with revisions to the WaterSense New Home Specification. You can find previous versions of the Water Budget Tool and other supporting documents below.

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