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Causes of Water Waste

Causes of Water Waste. Mike Baron Toro Irrigation. 18% - 20% CA Electricity Used To Pump or Treat Water. The Water-Energy NEXUS. We Don’t Want To See. We Can’t Afford. Sprinklers. Runoff. Soil. Infiltration. Intake Rates vs. Application Rates.

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Causes of Water Waste

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  1. Causes of Water Waste Mike Baron Toro Irrigation

  2. 18% - 20% CA Electricity Used To Pump or Treat Water The Water-Energy NEXUS

  3. We Don’t Want To See. We Can’t Afford.

  4. Sprinklers Runoff Soil Infiltration Intake Rates vs. Application Rates Coarse Sand .75”-1”/hr. Fine Sand .5”-.75” Fine Sandy Loam .35”-.5” Silt Loam .15”-.4” Clay Loam .1”-.2” Conventional Spray 1.58”/HRToro Precision Sprays 1.00”/HRFixed Arc Rotating Nozzle 0.75”/HRToro Precision Rotating 0.55”/HRHunter MP Rotator: 0.39”/HR

  5. What Causes This Water Waste? • Runoff? • High application rate? • Excessive run times? • Overspray? • Leaking sprinkler seals? • Non-plumb heads? • Wind? • Controller problem? • Valve stuck on?

  6. What Causes This Water Waste? • Ponding • Excessive run times? • Low head drainage? • High application rate? • Controller problem? • Valve stuck on?

  7. Low Head Drainage – Silent & Costly • 1” PVC Assumption • 4 cycles per day • 4,363.6 units/month • Elevation Change • Between valve & heads • Water flows down hill • HOA • 19,000 heads • 250,000’+ pipe

  8. What Causes This Water Waste? Slope & High Application Rates

  9. MWELO – AB1881? The irrigation system shall be designed to prevent runoff, low head drainage, overspray, or other similar conditions where irrigation water flows onto non-targeted areas, such as adjacent property, non-irrigated areas, hardscapes, roadways or structures.

  10. High Pressure Misting Compounded Waste From Windrift

  11. Pressure Gauge Kit • PSI Is Important • Static vs. Dynamic • High PSI Waste • Low PSI Waste • Manufacturer Specs • Sprays • Rotors • Bubblers • Drip

  12. MWELO – AB1881 The irrigation system shall be designed to ensure that the dynamic pressure at each emission device is within the manufacturer’s recommended pressure range for optimal performance.

  13. MPR = Matched Precipitation Rate Precipitation ARC Rate 90° 0.99”/hr 1” • Performance Factors • 2.0 gpm nozzle • 30’ radius 0.49”/hr 180° 0.25”/hr 360°

  14. Radius Reduction & MPR After 5’ Radius Reduction Precip = 0.71”/hr Before Radius Adjustment Precip = 0.49”/hr % Change: 44.9%

  15. Avoid Mixing Sprinkler Types

  16. Is This Water Waste? Mixing Sprinkler Types Guarantees Either Over Watering Or Severe Stress

  17. The Impact of Weather WEATHER = ET (inches) Solar Radiation Wind Humidity Tempº Monthly ET For Los Angeles, CA Monthly Water Budget %

  18. MWELO – AB1881 Weather-based irrigation controllers or soil moisture-based controllers or other self-adjusting irrigation controllers shall be required for irrigation scheduling in all irrigation systems. • Commercial Models • 12, 24, 36 & 48 Stations • Flow Sensing • SWAT Tested & Approved • No Weather Station Installation/Maintenance Required • Residential Models • 6, 9, 12 & 24 Stations • SWAT Tested & Approved • No Weather Station Installation/Maintenance Required

  19. MWELO – AB1881 High flow sensors that detect and report high flow conditions created by system damage or malfunction are recommended.

  20. MWELO – AB1881 • The irrigation system shall be designed to prevent runoff, low head drainage, overspray, or other similar conditions where irrigation water flows onto non-targeted areas, such as adjacent property, non-irrigated areas, hardscapes, roadways or structures.

  21. You Don’t Have To Change. Survival Is Not Mandatory. Edward S. Deming

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