Add a rain sensor to your automatic sprinkler system
Why This is Green
A rain sensor, also called a rain shut-off device or a rain switch, is a small contraption that turns off an automatic lawn irrigation system when it rains. You mount it in an open area so it can sense the amount of water your lawn has gotten from the rain. Then it “tells” your system to use only the amount of water your lawn still needs and no more — significantly reducing your water bill. Some county water authorities estimate a rain sensor on a 5-zone sprinkler system saves around $13 each time it interrupts a watering cycle. If it does that ten times in a season, that's real savings. A rain sensor also conserves water.
Using less water allows more to stay in the ground or in a reservoir, which in turn helps to support wildlife and preserve H2O for future use. Even if you live in a place where it rains a lot, there may be a water shortage. Concerns are rising that there may not be enough clean water to support population growth. Reduced mountain snow pack and earlier run-off driven by rising temperatures are affecting available water supply, even in areas that don't technically have droughts or restrictions. At least 36 states expect water shortages in the next five years.
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How To
Each sprinkler system is different. Check your system's instructions or manufacturer’s website to determine if your system can be upgraded — either wired or wirelessly. Most manufacturers sell sensors specifically for use with their systems.
Purchase the water sensor. Rebates are available in some areas — check to see if your version qualifies.
Install the water sensor in an unobstructed place for the most accurate rain collection.
