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Check irrigation systems when changing the clocks on Sunday November 4. Photo: Kelly M. Grow/ California Department of Water Resources daylight savinig time

Fall Back and Save Water As Clocks Change

Whether you are excited about an extra hour of sleep or dour about losing an hour of sunlight at the end of the day, daylight saving time ends Sunday, Nov. 4. The annual adjustment is a great reminder to perform several important household tasks, such as replacing smoke alarm batteries and restocking emergency preparedness kits.

The San Diego County Water Authority asks residents to add one more important task when changing the clocks: Adjust irrigation systems to save water in the months ahead.

“Adjusting irrigation is an easy way to conserve water, since landscapes need less irrigation as the days get shorter and cooler,” said Dana Friehauf, a water resources manager for the Water Authority. “Residents also should make sure their irrigation systems are working correctly, and are free of broken sprinkler heads or other leaks that waste water.”

Approximately half of a typical California household’s water use is outdoors. Seasonal adjustments to irrigation controllers in preparation for winter weather not only reduce water waste, they benefit the health of landscape plants.

Cool-season water-saving practices can reduce use

Additional water-saving practices during the fall and winter months include:

  • Turning off irrigation systems when rainstorms are predicted.
  • Leaving irrigation systems off for at least a week after significant rainfall.
  • Installing rain barrels or cisterns to help capture stormwater from roofs and store it for future irrigation use.

Fall is also the ideal time for residents to upgrade thirsty turf yards to WaterSmart sustainable landscapes. Homeowners can take advantage of winter rains to help establish a new landscape. The Water Authority’s award-winning WaterSmart Landscape Makeover Program offers a variety of free classes and how-to online videos to guide homeowners through the conversion process. More information is at WaterSmartSD.

In addition, there are a limited number of residential rebates available for homeowners who want to upgrade to sustainable landscaping at SoCal Water$mart.

The Water Authority offers additional water-saving resources for residents and businesses through its Live WaterSmart campaign. These include:

  • Free water-use surveys and irrigation checkups
  • Rebates for highly efficient irrigation equipment, washing machines and other devices
  • Water-efficiency training for professional landscapers
  • An online home water-use calculator and other tools

For a comprehensive list of tips, or to learn more about the Water Authority’s suite of water-saving resources, go to WaterSmartSD.org.

 

Fall Back and Save Water As Clocks Change

Whether you are excited about an extra hour of sleep or dour about losing an hour of sunlight at the end of the day, daylight saving time ends Sunday, Nov. 4. The annual adjustment is a great reminder to perform several important household tasks, such as replacing smoke alarm batteries and restocking emergency preparedness kits. The San Diego County Water Authority asks residents to add one more important task when changing the clocks: Adjust irrigation systems to save water in the months ahead.

When you compare how much water an efficient landscape design needs compared to your existing landscape, you can estimate your water savings. Landscape water savings

How Low Can Your Landscape Water Savings Go?

In places like San Diego County where water is a very precious resource, landscape designs that use the least potable water necessary are a growing part of the regional ethic. That means property owners should think about the efficiency and sustainability they can achieve in their landscaping.  

As a general rule, it’s smart to maximize your ability to capture and use rainwater, and reduce, if not eliminate, your reliance on potable water for irrigation. When you compare how much water an efficient landscape design needs compared to your existing landscape, you can estimate your water savings.  

To calculate landscape water use, the four key variables are: 

  1. Landscape Area (LA) – the square feet of area being landscaped with plants that require irrigation 
  1. Evapotranspiration (ET) – this is the number in inches based on your San Diego Climate Zone
  1. Plant Factor (PF) – This is moderate, low, or very low depending on your plant selection 
  1. Irrigation Efficiency (IE) – There is no such thing as a perfect irrigation system. Many factors can limit efficiency and impact both your water use and the health of your plants. 

Let’s assume your landscaped area is 1,000 square feet, with an ET of 51 inches annually, and IE of 0.7. Now, look at the difference your plant selection can make in water use: 

Example 1: High Water Use plants (PF of 0.8) = 36,137 gallons of water per year 

Example 2: Moderate Water Use plants (PF of 0.5) = 22, 586 gallons of water per year 

Example 3: Low Water Use plants (PF of 0.2) = 9.034 gallons of water per year 

Example 4: Very Low Water Use plants (PF of 0.1) = 4,517 gallons of water per year 

 Based on these examples, you could save 17,103 gallons of water every single year by selecting very low water use plants instead of high water use plants.  

This article was inspired by the 71-page Sustainable Landscapes Program guidebook available at SustainableLandscapesSD.org. The Water Authority and its partners also offer other great resources for landscaping upgrades, including free WaterSmart classes at WaterSmartSD.org.