Presented By Don Franklin California Model Water Efficient Landscape Ordinance

DWR’s Revised Draft Ordinance Lowers maximum applied water allowance Increase irrigation efficiency Lowers landscape size threshold Provides graywater incentives Increases onsite stormwater capture Specifies new reporting requirements July 9 th 2015

Lowers Maximum Applied Water Allowance Lowered the ET Adjust Factor (ETAF) from 0.70:  to 0.55 for residential  to 0.45 for commercial industrial and institutional Set default irrigation efficiency:  Drip at 0.81  Overhead spray at 0.75  Both are used in total water use calculation

Increases Irrigation Efficiency Requires all irrigation devices to meet American Society of Agricultural and Biological Engineer / International Code Council (ASABE/ICC) –All sprinklers have to meet or exceed DU distribution uniformity standard of 0.65

Irrigation Efficiency is defined in the definitions section of the State of California’s MWELO (§ 491. Definitions.): “irrigation efficiency” (IE) means the measurement of the amount of water beneficially used divided by the amount of water applied. Irrigation efficiency is derived from measurements and estimates of irrigation system characteristics and management practices. The irrigation efficiency for purposes of this ordinance are 0.75 for overhead spray devices and 0.81 for drip systems. Increases Irrigation Efficiency Note: 0.65 DU can not = 0.75 Irrigation Efficiency IE is not the Distribution Uniformity (DU), either low quarter (DU LQ ), or low half (DU LH ). In a report to the California Legislature, the California DWR calculates IE as: IE = DU LH x IME (Irrigation Management Efficiency)

Lowers Maximum Applied Water Allowance Below are the average Irrigation Efficiencies for Hunter Industries’ stream rotor sprinklers derived from test results per the ASABE/ICC standard when spaced to achieve head-to-head coverage.

Lowers Landscape Size Threshold Lowered the landscape size threshold from 2,500 sq. ft to 500 sq. ft for new development projects Provided a checklist compliance approach for landscape between 500 and 2,500 sq. ft.

System (B) Automatic irrigation controllers utilizing either evapotranspiration or soil moisture sensor data utilizing non-volatile memory shall be required for irrigation scheduling in all irrigation systems Irrigation Design Plan

A Wide Range of Sensors For Every Application Mini-Weather Station Rain Bird ToroHunter Irrometer

S.W.A.T. Testing Soil Moisture Based Climate Based Controls

System (C) If the water pressure is below or exceeds the recommended pressure of the specified irrigation devices, the installation of a pressure regulating device is required to ensure that the dynamic pressure at each emission device is within the manufacturer’s recommended pressure range for optimal performance Irrigation Design Plan

Passive Water Conservation Irrigation Design Plan

Passive Water Conservation Valve Pressure Regulator Irrigation Design Plan

Pressure regulation in head Standard in-stem pressure regulator eliminates misting and fogging (C) 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.

492.7 Irrigation Design Plan (C) 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. Pressure RegulatedNon-Pressure Regulated Saves up to 25% on water use versus traditional spray sprinklers

492.7 Irrigation Design Plan (D) Sensors (rain, freeze, wind, etc.), either integral or auxiliary, that suspend or alter irrigation operation during unfavorable weather conditions shall be required on all irrigation systems, as appropriate for local climatic conditions. Rain-Clik’s Patented Quick Response™ System Shuts down system right away during rainfall - keeps sprinklers from running during a shower

492.7 Irrigation Design Plan (G) Flow sensors that detect and report conditions created by system damage or malfunction are required for all on non-residential landscapes and residential landscapes of 5000 sq. ft. or larger. FLOW CLIK FLOW SYNC

(I) 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 Irrigation Design Plan Check valve installed to control low head drainage

(I) 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 Irrigation Design Plan 1” /2”9.17 2” /2” ” ”65.26 Gallons per 100 feet

(I) 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 Irrigation Design Plan Typical Residence 500’ of 1” pipe 4.08 gallons per 100’ 20.4 gallons drains per irrigation cycle 180 irrigation days per year 3,672 gallons per year wasted

Built in Check Valve and Pressure Regulation Keeps water in the line between cycles Allows matched application rate over entire grid Eliminates water from draining to low points Does not allow dirt to be pulled into emitter after shut down Standard with PLD, Eco-Mat & Eco-Wrap Provides a check height of up to 5 feet Head Point sourse + Screen CV = 9 feet of Head +

(I) 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 Irrigation Design Plan PLDECO-WRAP ECO-MAT

(J) Relevant information from the soil management plan, such as soil type and infiltration rate, shall be utilized when designing irrigation systems. § Irrigation Design Plan Sprays Rotors Drip MP Rotator Soil In-Take 1.85 ".50 " 1.7 ".4 ".5 " to.12 "

(J) Relevant information from the soil management plan, such as soil type and infiltration rate, shall be utilized when designing irrigation systems Irrigation Design Plan

Lawn Zone 2 and Zone 3 Precipitation Rate Combined Flow Rate Distribution Uniformity (LQ) Operating Pressure Spray Nozzles 1.6 in/hr42 GPM31%21 PSI MP Rotator0.8 in/hr21 GPM77%27 PSI Change50% Less 46%Higher6 PSI Gain Lawn Zone 2 and Zone 3 Quantity of water required to apply 30 inches Irrigation Hours required to apply 30 inches of water Spray Nozzles 205 CCF60 Hours MP Rotator 83 CCF49 Hours Change60% Less Water 20% Reduction in Water Window The Presidio Water Audit San Francisco April 10, 2010 Precipitation Rate = Slower GPM = Less (by 50%) Distribution Uniformity = Higher Water Window the SAME or LESS with MP Rotator!

(P) Sprinkler heads and other emission devices shall have matched precipitation rates, unless otherwise directed by the manufacturer’s recommendations Irrigation Design Plan

(T) Narrow or irregularly shaped areas, including turf, Areas less than ten (10) feet in width in any direction shall be irrigated with subsurface irrigation or other means that produces no runoff or overspray.

492.7 Irrigation Design Plan (T) Narrow or irregularly shaped areas, including turf, Areas less than ten (10) feet in width in any direction shall be irrigated with subsurface irrigation or other means that produces no runoff or overspray. In-Line Emitter ECO-WRAPECO-MAT

(U) Overhead irrigation shall not be permitted within 24 inches of any non- permeable surface. Allowable irrigation within the setback from non- permeable surfaces may include drip, drip line, or other low flow non-spray technology. The setback area may be planted or unplanted. The surfacing of the setback maybe mulch, gravel, or other porous material. § Irrigation Design Plan

(V) Slopes greater than 25% shall not be irrigated with an irrigation system with a application rate exceeding 0.75 inches per hour Irrigation Design Plan

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