2015 Urban Water MANAGEMENT PLAN FINAL June 2017 Prepared by: Acknowledgements Goleta Water District Board of Directors Richard M. Merrifield, President Meg West, Vice President John F. Cunningham Lauren Hanson William C. Rosen John McInnes, General Manager David Matson, Assistant General Manager Staff Contributors Ryan Drake, Water Supply and Conservation Manager Brooke Welch, Senior Water Resources Analyst The 2015 Urban Water Management Plan Update was prepared by RMC, a Woodard & Curran Company Goleta Water District 2015 Urban Water Management Plan Update FINAL Table of Contents Chapter 1 Introduction ............................................................................................................1 1.1 Purpose ....................................................................................................................2 1.2 Implementation of the UWMP ................................................................................... 3 Chapter 2 District Setting ........................................................................................................7 2.1 System Description ...................................................................................................7 2.2 Climate .....................................................................................................................7 Chapter 3 System Water Use ..................................................................................................9 3.1 Estimated Population Growth ................................................................................... 9 3.2 Current and Historical Water Demand ...................................................................... 9 3.3 Projected Water Demand ....................................................................................... 11 Chapter 4 Baselines and Targets .......................................................................................... 15 4.1 Water Conservation Act and UWMP Requirements ................................................ 15 4.2 Baseline and Target Development .......................................................................... 16 4.3 Target Compliance ................................................................................................. 20 Chapter 5 System Supplies ................................................................................................... 23 5.1 Cachuma Project Water .......................................................................................... 23 5.2 State Water Project Water ...................................................................................... 23 5.3 Groundwater ........................................................................................................... 25 5.4 GWD Supply Management Requirements .............................................................. 26 5.5 Wastewater and Recycled Water ............................................................................ 28 5.6 Transfers and Exchanges ....................................................................................... 28 5.7 Current and Projected Water Supply ...................................................................... 29 5.8 Planned Water Supply Projects and Programs ....................................................... 29 5.9 Desalinated Water .................................................................................................. 30 Chapter 6 Recycled Water ..................................................................................................... 31 6.1 Recycled Water System Description ....................................................................... 31 6.2 Recycled Water Demand ........................................................................................ 32 Chapter 7 Water Quality ........................................................................................................ 37 7.1 Cachuma Project and SWP Water .......................................................................... 37 7.2 Groundwater ........................................................................................................... 37 7.3 Water Quality Impacts on Reliability ....................................................................... 38 Chapter 8 Water Supply Reliability ....................................................................................... 39 8.1 Reliability of Supplies ............................................................................................. 39 8.2 Supply and Demand Comparisons ......................................................................... 41 8.3 Climate Change ...................................................................................................... 43 Chapter 9 Water Demand Management Measures............................................................... 49 9.1 Water Waste Prevention Ordinance........................................................................ 49 9.2 Metering ................................................................................................................. 50 9.3 Conservation Pricing .............................................................................................. 50 9.4 Public Education and Outreach .............................................................................. 51 9.5 Programs to Assess and Manage Distribution System Real Loss ........................... 52 9.6 Water Conservation Program Coordination and Staffing Support ........................... 52 9.7 Other ......................................................................................................................53 Chapter 10 Water Shortage Contingency Plan ...................................................................... 57 10.1 Planning ................................................................................................................. 57 10.2 Stages of Action to Respond to Water Shortages ................................................... 58 10.3 Penalties for Excessive Use ................................................................................... 64 10.4 Financial Impacts of Actions during Shortages ....................................................... 64 10.5 Mechanisms to Determine Reduction in Water Use ................................................ 65 June 2017 i Goleta Water District 2015 Urban Water Management Plan Update FINAL 10.6 Minimum Water Supply Next Three Years .............................................................. 66 Chapter 11 References ............................................................................................................ 67 List of Tables Table 1-1: DWR Table 2-1: Public Water Systems ................................................................. 1 Table 1-2: DWR Table 2-2: Plan Identification ........................................................................ 1 Table 1-3: DWR Table 2-3: Agency Identification .................................................................. 2 Table 1-4: DWR Table 2-4: Water Supplier Information Exchange ....................................... 5 Table 1-5: Agency Coordination Summary ............................................................................ 5 Table 1-6: DWR Table 10-1: Notification to Cities and Counties ........................................... 5 Table 1-7: Public Participation Timeline ................................................................................. 6 Table 2-1: Climate Data for Goleta Water District .................................................................. 8 Table 3-1: DWR Table 3-1: Population – Current and Projected ........................................... 9 Table 3-2: Historical Water Deliveries (AF) ...........................................................................10 Table 3-3: Historical Sales to Other Water Agencies (AFY) .................................................10 Table 3-4: DWR Table 4-4: 12 Month Water Loss Audit Reporting (2015) ...........................11 Table 3-5: DWR Table 4-1: Demand for Potable and Raw (Chlorinated) Water – Actual (2015) ................................................................................................................................11 Table 3-6: DWR Table 4-2: Demand for Potable and Raw Water – Projected (2020 to 2035) (AFY) ................................................................................................................................13 Table 3-7: DWR Table 4-3: Total Water Demand ...................................................................14 Table 3-8: DWR Table 4-5: Inclusion in Water Use Projections ...........................................14 Table 4-1: 1995 to 2015 UWMP Population Estimates ..........................................................18 Table 5-1: DWR Table 6-1: Groundwater Volume Pumped (AF) ...........................................26 Table 5-2: DWR Table 6-8: Water Supplies – Actual 2015 ....................................................29 Table 5-3: DWR Table 6-9: Water Supplies – Projected ........................................................29 Table 5-4: DWR Table 6-7: Expected Future Water Supply Projects or Programs .............30 Table 6-1: DWR Table 6-2: Wastewater Collected Within Service Area in 2015 ..................31 Table 6-2: DWR Table 6-3: Wastewater Treatment and Discharge within Service Area in 2015 ..................................................................................................................................32