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Addressing Landscape Water Use


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Presentation given by Paige Gimbal from Water Counts at the Session: "Getting more from less - Innovations in Infrastructure" at the Great Valley Center's Sacramento Valley Forum on October 28, 2009 in Chico, CA.

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Addressing Landscape Water Use

  1. 1. Addressing Landscape Water Use Paige Gimbal - WaterCounts ASIC, LEED-AP, ARCSA-AP, CID, CLIA EPA Water Sense Partner Sacramento Valley Forum October 28, 2009
  2. 2. California’s Dilemma <ul><li>Another year of drought will have severe impacts on both the economy and the environment. However, even when normal rainfall returns, the state will continue to experience water supply challenges due to several factors, including a growing population, measures to protect the environment, aging storage and delivery infrastructure, and climate change. </li></ul>
  3. 3. California’s Water Puzzle <ul><li>Quantifying the problem </li></ul><ul><li>Deteriorating Sacramento – san Joaquin delta </li></ul><ul><li>Ageing infrastructure </li></ul><ul><li>Record drought </li></ul><ul><li>Climate change </li></ul><ul><li>Conservation constraints </li></ul><ul><li>Population growth </li></ul><ul><li>Identifying solutions </li></ul><ul><li>Everyone shares responsibility for finding practical solutions to build a sustainable water future </li></ul><ul><li>It will require honest discussion, tough choices and unprecedented cooperation </li></ul>
  4. 4. Water’s Soft Path <ul><li>Steps along the soft path: </li></ul><ul><li>Define the water supply </li></ul><ul><li>Do more with less </li></ul><ul><li>Match water quality to use </li></ul><ul><li>Price water properly </li></ul><ul><li>Protect our ecosystems </li></ul><ul><li>Link energy management to water management </li></ul><ul><li>Address growth responsibly </li></ul><ul><li>Focus on sustainability </li></ul>Increasing efficiency and reducing waste in the water system is quite often the cheapest, easiest way for us to get new water…
  5. 5. Water Use Efficiency <ul><li>Strategy 3: </li></ul><ul><li>Aggressively increase water use efficiency </li></ul><ul><li>Using water efficiently is a foundational action for water management </li></ul><ul><li>Water conservation reduces water demand, wastewater discharges, and can reduce energy demand and greenhouse gas emissions </li></ul><ul><li>Efficient water use can help communities cope with water shortages that may result from climate change </li></ul><ul><li>Water use efficiency must be a cornerstone of every water agency’s water portfolio </li></ul>
  6. 6. <ul><li>Public agency </li></ul><ul><li>Legislation </li></ul><ul><ul><li>Model ordinance </li></ul></ul><ul><li>Implementation </li></ul><ul><ul><li>Requirements </li></ul></ul><ul><li>Validation </li></ul><ul><ul><li>Plan check </li></ul></ul><ul><ul><li>Post installation audit </li></ul></ul><ul><li>Compliance </li></ul><ul><ul><li>Post construction monitoring </li></ul></ul><ul><ul><li>Existing landscapes </li></ul></ul><ul><li>Irrigation industry </li></ul><ul><li>Technology </li></ul><ul><ul><li>Smart controllers </li></ul></ul><ul><ul><li>Rotor nozzles </li></ul></ul><ul><ul><li>Low volume irrigation </li></ul></ul><ul><li>GIS technology </li></ul><ul><li>Satellite imagery </li></ul><ul><li>Alternative water supplies </li></ul>AB 1881 - California’s Model Water Efficient Landscape Ordinance
  7. 7. Legislation As A Tool Of Change <ul><li>Aimed at irrigation technology that will solve common problems </li></ul><ul><li>Targets new construction and commercial landscapes </li></ul><ul><li>Requires landscapes installed after January 1, 2010 to use appropriate technology and design standards </li></ul><ul><li>Uses a water budget approach to determine how much water may be used </li></ul><ul><li>Addresses existing landscapes larger than one acre </li></ul>
  8. 8. Implementation <ul><li>Requires cities and counties to adopt and enforce the revised model ordinance not later than January 1, 2010 </li></ul><ul><li>Requires plan check approval to verify that irrigation designs meets model ordinance standards </li></ul><ul><li>Allows for civil and criminal penalties for non compliance </li></ul>
  9. 9. Validation <ul><li>Plan check </li></ul><ul><ul><li>Requires public agency to validate irrigation design is in compliance </li></ul></ul><ul><ul><li>Validates that design meets minimum distribution uniformity of 71% </li></ul></ul><ul><li>Post installation </li></ul><ul><ul><li>Water audit validates installation meets minimum distribution uniformity of 71% </li></ul></ul><ul><li>Requires certificate of completion prior to occupancy </li></ul>
  10. 10. Compliance <ul><li>Post construction monitoring </li></ul><ul><ul><li>Monitors irrigation water use through monthly billing cycles </li></ul></ul><ul><ul><li>Compares actual water use against approved water budget </li></ul></ul><ul><ul><li>Notifies property owner if corrective action is needed </li></ul></ul><ul><li>Existing landscapes </li></ul><ul><ul><li>Subject to irrigation audits, irrigation surveys or water use analysis programs </li></ul></ul><ul><ul><li>Needs to adhere to calculated water budgets (MAWA) </li></ul></ul><ul><ul><li>Prohibits water waste </li></ul></ul>
  11. 11. Irrigation Technology - Controllers <ul><li>Weather and soil moisture based controllers </li></ul><ul><ul><li>ETo-based water use budgets developed for accounts with dedicated irrigation meters </li></ul></ul><ul><ul><li>Irrigation management based on soil moisture content </li></ul></ul><ul><ul><li>Prohibits sale or installation of non-complying irrigation controllers or moisture sensors for landscape use on or after January 1, 2012 </li></ul></ul><ul><li>Rain sensor for automatic system shut down during rain event </li></ul><ul><li>Weather stations communicate to irrigation controllers to upload daily weather data </li></ul>
  12. 12. Irrigation Technology – Nozzles <ul><li>Rotator nozzles </li></ul><ul><ul><li>Reduces water use by approximately 30 percent </li></ul></ul><ul><ul><li>Lowers application rates prevent runoff </li></ul></ul><ul><ul><li>Maximizes sprinkler system's distribution uniformity </li></ul></ul><ul><li>Precision spray nozzles </li></ul><ul><ul><li>Lowers precipitation rate prevent runoff </li></ul></ul><ul><ul><li>Uniform droplet size reduce misting and overspray </li></ul></ul><ul><ul><li>Increases performance and application efficiency </li></ul></ul>
  13. 13. Irrigation Technology – Low Volume <ul><li>Subsurface drip tubing </li></ul><ul><ul><li>30%-50% less water use </li></ul></ul><ul><li>KISSS subsurface capillary tubing </li></ul><ul><ul><li>50%-85% less water use </li></ul></ul><ul><li>EPIC capillary chamber </li></ul><ul><ul><li>50% - 85% less water use </li></ul></ul><ul><ul><li>Absorbs natural run-off and effluents </li></ul></ul>
  14. 14. GIS Technology <ul><li>GIS allows us to view, understand, question, interpret, and visualize data in many ways that reveal relationships, patterns, and trends in the form of maps, globes, reports, and charts </li></ul><ul><li>GPS and GIS can be used to accurately model the expected distribution of irrigation systems </li></ul><ul><li>GIS plan check tool validates irrigation design’s distribution uniformity prior to plan approval </li></ul><ul><li>GIS audit tool validates irrigation design’s distribution uniformity post installation </li></ul>
  15. 15. Satellite Imagery <ul><li>Allows public agency to assess existing landscapes to estimate water budgets </li></ul><ul><li>Colorized satellite imagery shows spatial distribution of remotely sensed vegetation </li></ul><ul><li>Can be used in conjunction with GIS mapping systems </li></ul>
  16. 16. Alternative Water Supplies <ul><li>Reclaim water </li></ul><ul><ul><li>Encourages the use of reclaim water </li></ul></ul><ul><li>Stormwater catchment </li></ul><ul><ul><li>Encourages on-site retention and infiltration of stormwater </li></ul></ul><ul><li>Rainwater harvesting </li></ul><ul><ul><li>Encourages rain harvesting technologies including rain gardens </li></ul></ul>
  17. 17. Putting It All Together <ul><li>Water use efficiency is an integral piece to the water puzzle that is cost effective and something everyone can do </li></ul><ul><li>Outdoor water conservation goals can be realized using irrigation technology that is available on the market today </li></ul><ul><li>GIS and GPS technologies area effective tools to validate distribution uniformity and irrigation efficiency in irrigation design and installation </li></ul><ul><li>Satellite imagery is an effective tool to estimate existing landscape areas and water budgets </li></ul><ul><li>Developing alternative water supplies for outdoor water use will ease the burdens of a dwindling water supply </li></ul>
  18. 18. It’s Time To Get Serious!