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WaterSense: Meets EPA Critera WaterSense Seal An EPA Partnership Program

Final Specification for Weather-Based Irrigation Controllers

You will need Adobe Acrobat Reader to view some of the files on this page. See EPA's PDF page to learn more about PDF, and for a link to the free Acrobat Reader.

EPA released a final WaterSense specification for weather-based irrigation controllers on November 3, 2011. Manufacturers that produce weather-based irrigation controllers meeting EPA's efficiency and performance criteria can apply to have their products certified to earn the WaterSense label. Before submitting products for testing, manufacturers must have a partnership agreement (PDF) (3 pp, 336K) with EPA in place. Visit the manufacturer partner page to learn more. Below are technical documents that provide more information, including the final specification and supporting materials.

Please note: WaterSense has prepared software that the licensed certifying bodies will use to administer the performance test protocol as described in the specification. Manufacturer partners may request a copy of the software by contacting the WaterSense Helpline at watersense@epa.gov or (866) WTR- SENSE (987-7367). The helpline cannot provide technical support for the software. EPA only provides technical support for the software to its licensed certifying bodies as part of the certification process.

For more information about the weather-based irrigation controller specification development process, including the draft specification, public response to the draft specification, EPA's response to the public comments, please visit the Specification for Weather-Based Irrigation Controller Background Materials page.

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