Irrigation Conserve-Protect Doug Goodwin LI , II CTLIA

Efficient Use of Water Overall Leak Detection in Existing Infrastructure Pricing Lack of Data Indoor Use Landscape Irrigation

Leak Detection Houston alone lost 22 billion gallons in 2012 Aging Infrastructure End of Service Life Population Growth

Pricing Water prices should rise or fall according to supply and demand. The idea that the price should be the same in the dry season (when supplies are low and demand for irrigation is high) as the wet season (when supplies are high and demand is low) is nonsense. Quote from Michael E. Webber, deputy director, Energy Institute, UT Irrigation Water Budgeting

Data Operating Blind Research and Development Landscape Irrigation Meters “ No Way I Used That Much Water”

Evaluation Criteria Backflow Assembly Rain Sensor Hydrozoning Broken Sprinklers Poor Head Layout Heads Not Aligned Raise or Lower Sprinkler Heads Nozzle Adjustments High or Low Zone Pressure Runoff or Low Head Drainage Obstructions Overspray Puddling Leaks in the Pipe Mixing Manufacturers Equipment Exposed Pipe or Zone Wiring

Backflow & Rain Sensors Has a Backflow Assembly Is Testable Is Properly Installed Has a Rain Sensor

Backflow & Rain Sensors Has a Backflow Assembly Is Testable Is Properly Installed Has a Rain Sensor 9,869 (92%) 8,814 (89%) 7,648 (72%)

Backflow & Rain Sensors Has a Backflow Assembly Is Testable Is Properly Installed Has a Rain Sensor 9,869 (92%) 8,814 (89%) 7,648 (72%) 4,292 (40%)

Zone Start Times By Hour 12AM 1AM 2AM 3AM 4AM 5AM 6AM 7AM 8AM 9AM 10AM 11AM 12PM 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10PM 11PM

Zone Start Times By Hour 12AM 1AM 2AM 3AM 4AM 5AM 6AM 7AM 8AM 9AM 10AM 11AM 12PM 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10PM 11PM 12,734 (16%) 4,317 (6%) 6,261 (8%) 7,179 (9%) 11,230 (14%) 9,347 (12%) 5,249 (7%) 2,063 (3%) 2,678 (3%) 634 (1%) 439 (1%) 256 (<1%) 106 (<1%) 52 (<1%) 44 (<1%) 80 (<1%) 24 (<1%) 72 (<1%) 179 (<1%) 407 (1%) 1,064 (1%) 1,034 (1%) 1,420 (2%) 975 (1%)

Irrigation Days Per Week 0 days per week 1 day per week 2 days per week 3 days per week 4 days per week 5 days per week 6 days per week 7 days per week

Irrigation Days Per Week 0 days per week 1 day per week 2 days per week 3 days per week 4 days per week 5 days per week 6 days per week 7 days per week 6,365 (8%) 6,654 (9%) 33,935 (43%) 16,574 (21%) 6,808 (9%) 1,665 (2%) 1,096 (1%) 4,946 (6%)

Type of Equipment Installed Sprays in the Turf Sprays in the Beds Rotors Stream Rotors Drip Bubblers

Type of Equipment Installed Sprays in the Turf Sprays in the Beds Rotors Stream Rotors Drip Bubblers 10,102(95%) 9,879 (92%) 7,459 (70%) 866 (8%) 911 (9%) 352 (3%)

Problem Statistics Mixed Manufacturers Broken Sprinkler Broken Nozzle Low Head Drainage Poor Head Layout Adjust Nozzles Heads Not Aligned Raise Heads Lower Heads Under Pressure Over Pressure Runoff Puddling Obstructions Overspray Needs Hydrozoning Leak in Mainline Leak in Lateral Exposed Pipe Exposed Wire

Problem Statistics Mixed Manufacturers Broken Sprinkler Broken Nozzle Low Head Drainage Poor Head Layout Adjust Nozzles Heads Not Aligned Raise Heads Lower Heads Under Pressure Over Pressure Runoff Puddling Obstructions Overspray Needs Hydrozoning Leak in Mainline Leak in Lateral Exposed Pipe Exposed Wire 2,000 (19%) 5,226 (49%) 3,470 (32%) 2,184 (20%) 4,196 (39%) 7,816 (73%) 6,596 (62%) 7,343 (69%) 3,342 (31%) 1,357 (13%) 4,524 (42%) 3,060 (29%) 3,333 (31%) 6,242 (58%) 7,251 (68%) 5,010 (47%) 110 (1%) 1,609 (15%) 124 (1%) 56 (1%)

Effects of Pressure Pressure (PSI)Water Loss Multiplier Rain Bird® Corporation For each increase in pressure over and above the manufacturers recommended operating pressure at the nozzle, a sprinkler will waste water due to the spray pattern changes and smaller water droplets

Excessive Pressure 10,684 completed evaluations 1,037 properties did not have a static pressure reading 9,647 properties did have a static pressure reading 202 properties had 45 psi or less 9,445 properties had greater than 45 psi static pressure 6,968 properties had 60 psi or greater 9,445  9,647 = 98% could be considered over pressured 6,968  9,647 = 72% with a water loss multiplier of 23% or higher

Poor Sprinkler Layout – 30,000 to 69,000 gallons Over Pressure – 7,000 to 48,000 gallons Raise and Align Sprinklers – 2,000 to 18,000 gallons Hydrozoning – 8,000 to 20,000 gallons Total Annual Potential Waste per Residence – 47,000 to 155,000 gallons Annual Potential Waste

Backflow-Water Quality At any one time, UN report on safe water, half the world’s hospital beds are filled with people suffering from illness linked to contaminated water Lawn Irrigation – High Hazard? TCEQ Irrigation Advisory Council TCEQ Cross Connection Control Subcommittee Infrastructure Blending Treatment Improvements

Possible Solutions Local Level, Cities, MUDS,& Water Authorities 2007 Legislature 2017 Legislature

Questions & Discussion