Illinois Irrigation Rain Sensor Law

On April 21, 2011, in Irrigation, Services, by Admin

Through the efforts of the Illinois Landscape Contractors Association (ILCA), rain sensor legislation, which will save millions of gallons of water, has been signed into law inIllinois.  Rain Sensor legislation (S. 730) impacts irrigation systems for both commercial and residential users.  Excluded are irrigation systems on golf courses and agricultural lands.  The new law requires all automatic sprinkler systems in Illinois to have technology that interrupts operation when there is sufficient soil moisture or rainfall. (view full Lawn & Landscape Article)

Immediate & Long Term Benefits Include:

  • Saves Money.  Whether you pay for city water or spend electricity running a pump, the money you save over time will more than pay for the rain sensor.
  • Extends Sprinkler System Life Span.  Sprinklers are made up of gears and other parts the move.  The less the sprinkler parts are used, the longer they last.
  • Protects Water Resources.  By limiting the over use of your sprinkler system, rain sensors reduce excess water run-off that carries fertilizers and pest control chemicals into our shared water supply.
  • Conserves Water.  Less water is wasted when less supplemental water is needed for our turf and in your garden.

How much money can you save with a rain sensor device? It will vary based on your water source (city, re-claim, or well) and where you live (water costs, electrical rate, climate).

Here is one example that demonstrates the benefits listed above: Seminole County, Florida.  System Description:

  • Designed to irrigate a quarter acre of grass and programmed to apply .5″ of water every time the system runs.
  • This schedule would equal 6,788 gallons per irrigation cycle.
  • This system (on City Water) pays $2.30 per thousand gallons.
  • Every time the rain sensor interrupts a sprinkler cycle, you would save $15.61

According to a recent study in Florida, the use of a rain sensor device averaged a 45% savings in water for single-family residential water usage.  The next time you see a sprinkler system running in the rain, you now know it doesn’t have to be that way.  Rain sensors save money, save our environment and save water.

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