The performance criteria contained in this specification are designed to test the capability of the controller to provide adequate and efficient irrigation while minimizing potential runoff when the controller is programmed and operated in compliance with the manufacturer's instructions. Conformance with these requirements is an indication that the controller has the capacity to modify or generate appropriate irrigation schedules based on weather inputs.
You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.- WS-products-spec-irrigation-controllers.pdf (PDF)(24 pp, 189 K)