An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

WaterSense

Weather–Based Irrigation Controller Mini Report

The U.S. Environmental Protection Agency’s (EPA’s) WaterSense program labels weather-based irrigation controllers (WBICs) that have been certified by a third party to meet efficiency and performance criteria detailed in the WaterSense specification. WaterSense labeled controllers must be able to adequately meet the watering needs of a landscape without overwatering. 

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.