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Independent testing certifies the ESP-SMT as a highly-efficient, weather-based controller that meets landscape needs without overwatering.
Rain Bird's ESP-SMT Smart Irrigation Control System has earned the prestigious WaterSense label from the Environmental Protection Agency's (EPA) WaterSense partnership program. The WaterSense label certifies that the ESP-SMT has passed the EPA's rigorous testing requirements, confirming the controller's water-efficiency and performance in landscape settings.
The ESP-SMT is the first controller from a full-line irrigation manufacturer to receive this certification. This designation gives landscape architects the confidence to specify this product, while landscape contractors can install it to save money on their customers' water bills.
The controller's internal database includes over eight years of historical weather by zip code. It incorporates on site rainfall amounts and temperature with the historical weather data to adjust watering on a daily basis. This is a key element to its success, as the controller is able to calculate effective rainfall amounts to more accurately determine how much water is needed to maintain optimum soil moisture levels.
To earn the WaterSense label, weather-based irrigation controllers must demonstrate the ability to adequately meet the watering needs of a landscape without overwatering. To prove this ability, these controllers must first undergo independent testing in accordance with the Irrigation Association's Smart Water Application Technologies (SWAT) 30-day testing protocol.
For more information about this irrigation product, visit www.rainbird.com/esp-smt or call 1-800-RAIN BIRD. To learn more about the EPA WaterSense labeling program, visit www.epa.gov/watersense.
Francisco Uviña, University of New Mexico
Hardscape Oasis in Litchfield Park
Ash Nochian, Ph.D. Landscape Architect
November 12th, 2025
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