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WaterSense

Homes Specification

Homes specs bannerWaterSense Homes Program, Version 2

(effective February 18, 2021)

The WaterSense label is an important part of a whole-house solution to save water, energy, and money while ensuring customer satisfaction. The WaterSense Labeled Homes Program provides flexibility to builders while still meeting consumer expectations for water efficiency and performance.

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WaterSense Labeled Homes Program, Version 2.0

In February 2021, EPA released the WaterSense Specification for Homes, Version 2.0. The specification ensures that WaterSense labeled homes are at least 30 percent more water-efficient than a comparable home using typical new construction and also meet homeowner expectations for performance. Compared to Version 1.2, the Version 2.0 specification increases flexibility in meeting WaterSense’s technical requirements without compromising on overall water efficiency or performance, improves collaboration with green certification programs, and allows for easier implementation and certification. The specification is applicable to single-family homes and multifamily buildings. 

To confirm that homes are at least 30 percent more water-efficient than a comparable home using typical new construction, EPA evaluates a Home Certification Organization's (HCO) certification methods according to its technical evaluation process:

To confirm that homes meet an approved HCO certification method, the EPA WaterSense Homes Certification System requires a home to be inspected by a verifier and certified by the HCO.  

WaterSense Labeled Homes Program Transition

During 2021, EPA is making a transition from Version 1.2 to Version 2.0 of the WaterSense Specification for Homes. While Version 2.0 offers builders more flexibility, builders may continue to pursue certification using the WaterSense New Home Specification, Version 1.2 for any projects with permits issued by June 30, 2021. Certification of these homes must be finalized by December 31, 2021.  Learn more about the transition.  

Which version of the specification should I use?
Permit Date June 30, 2021 and before July 1, 2021 and beyond
Version available for use All homes may use Version 1.2 or Version 2.0 of the specification.  Homes using Version 1.2 must be certified by December 31, 2021. All homes must use Version 2.0 of the specification.

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WaterSense New Home Specification, Version 1.2

Version 1.2 of the WaterSense New Home Specification went into effect July 24, 2014. This specification establishes the criteria for homes labeled under the WaterSense program and is applicable to newly constructed single-family and multifamily homes. 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. 

Builders may continue to pursue certification using the WaterSense New Home Specification, Version 1.2 for any projects with permits issued by June 30, 2021. Certification of these homes must be completed by December 31, 2021.

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Homes Specification Background Information

For more information about the previous versions of the WaterSense Labeled Homes Program and the Version 2.0 specification development process, including the draft specification and supporting materials, summaries of stakeholder meetings, public response to the draft specification and supporting materials, and EPA's response to the public comments, please visit the Homes Specification Background page. The background page also included information on documents associated with Verison 1 of the specification.