Residential outdoor water use in the United States accounts for nearly 9 billion gallons of water each day, mainly for landscape irrigation. As much as half of this water is wasted due to evaporation, wind, or runoff, often caused by improper irrigation system design, installation, maintenance or scheduling. Allowing soil moisture-based control technologies to earn the WaterSense label will help further transform the market from traditional clock timer-based irrigation control to control technologies that schedule irrigation based on landscape water needs.
You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.- WaterSense Notice of Intent (NOI) to Develop a Draft Specification for Soil Moisture-Based Control Technologies (PDF)(13 pp, 217 K)
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Soil Moisture-Based Irrigation Control Technologies: WaterSense Specification Update (PDF)(9 pp, 526 K,
December 2017)
Status report on spec development for soil moisture-based irrigation controllers
- WaterSense Draft Specification for Soil Moisture-Based Irrigation Control Technologies Version 1.0 (PDF)(8 pp, 294 K)
- Soil Moisture-Based Irrigation Control Technologies Fact Sheet (PDF)(1 pg, 741 K)
- WaterSense Draft Specification for Soil Moisture-Based Irrigation Control Technologies Supporting Statement (PDF)(18 pp, 615 K)
- Cover Letter Draft Specification for Soil Moisture-Based Irrigation Control Technologies (PDF)(2 pp, 117 K)
- Soil Moisture-Based Irrigation Controller Final Test Report (PDF)(17 pp, 3 MB)
- WaterSense Draft Specification for Soil Moisture-Based Irrigation Control Technologies Public Meeting Slides (PDF)(59 pp, 4 MB)
- Draft Specification for Soil Moisture-Based Irrigation Control Technologies Public Meeting Summary (PDF)(15 pp, 348 K)
- Preliminary Comments on the WaterSense Draft Specification for Soil Moisture-Based Irrigation Control Technologies (PDF)(15 pp, 788 K)
- Comments on the WaterSense Draft Specification for Soil Moisture-Based Irrigation Control Technologies (PDF)(34 pp, 919 K)