2015 URBAN WATER MANAGEMENT PLAN FINAL DRAFT APRIL 2016 2015 URBAN WATER MANAGEMENT PLAN 2015 URBAN WATER MANAGEMENT PLAN City of Brea FINAL DRAFT Prepared for: Ron Krause Project Manager City of Brea [Signature 1 Name] 1 Civic Center Circle [Title] Brea, CA 92821 Prepared by: Arcadis U.S., Inc. 445 South Figueroa Street Suite 3650 Los Angeles California 90071 Tel 213 486 9884 Fax 213 486 9894 Our Ref.: 4109039.0000 Date: April 2016 arcadis.com 2015 URBAN WATER MANAGEMENT PLAN CONTENTS Acronyms and Abbreviations ....................................................................................................................... vii 1 Introduction .......................................................................................................................................... 1-1 1.1 Urban Water Management Plan Requirements ........................................................................... 1-1 1.2 Agency Overview ......................................................................................................................... 1-3 1.3 Service Area and Facilities .......................................................................................................... 1-5 1.3.1 The City of Brea Service Area .......................................................................................... 1-5 1.3.2 City of Brea Water Facilities ............................................................................................. 1-5 2 Demands .............................................................................................................................................. 2-1 2.1 Overview ...................................................................................................................................... 2-1 2.2 Factors Affecting Demand ........................................................................................................... 2-1 2.2.1 Climate Characteristics .................................................................................................... 2-1 2.2.2 Demographics .................................................................................................................. 2-2 2.2.3 Land Use .......................................................................................................................... 2-2 2.3 Water Use by Customer Type ..................................................................................................... 2-2 2.3.1 Overview ........................................................................................................................... 2-3 2.3.2 Non-Residential ................................................................................................................ 2-4 2.3.3 Sales to Other Agencies ................................................................................................... 2-4 2.3.4 Non-Revenue Water ......................................................................................................... 2-4 2.3.4.1 AWWA Water Audit Methodology ........................................................................... 2-4 2.4 Demand Projections..................................................................................................................... 2-7 2.4.1 Demand Projection Methodology ..................................................................................... 2-7 2.4.2 Agency Refinement .......................................................................................................... 2-7 2.4.3 25 Year Projections .......................................................................................................... 2-7 2.4.4 Total Water Demand Projections ..................................................................................... 2-9 2.4.5 Water Use for Lower Income Households ....................................................................... 2-9 2.5 SBx7-7 Requirements ................................................................................................................2-10 2.5.1 Baseline Water Use ........................................................................................................2-11 2.5.1.1 Ten to 15-Year Baseline Period (Baseline GPCD) ...............................................2-11 2.5.1.2 Five-Year Baseline Period (Target Confirmation) ................................................2-11 arcadis.com i 2015 URBAN WATER MANAGEMENT PLAN 2.5.1.3 Service Area Population .......................................................................................2-12 2.5.2 SBx7-7 Water Use Targets ............................................................................................2-12 2.5.2.1 SBx7-7 Target Methods ........................................................................................2-12 2.5.2.2 2015 and 2020 Targets ........................................................................................2-13 2.5.3 Regional Alliance ............................................................................................................2-14 3 Water Sources and Supply Reliability .................................................................................................. 3-1 3.1 Overview ...................................................................................................................................... 3-1 3.2 Imported Water ............................................................................................................................ 3-2 3.2.1 Imported Groundwater Supply (CDWC) ........................................................................... 3-2 3.2.2 Main San Gabriel Basin .................................................................................................... 3-2 3.2.3 Main San Gabriel Basin Judgment ................................................................................... 3-3 3.2.4 Colorado River Supplies ................................................................................................... 3-4 3.2.5 State Water Project Supplies ........................................................................................... 3-7 3.2.6 Storage ...........................................................................................................................3-10 3.3 Groundwater ..............................................................................................................................3-10 3.3.1 La Habra Groundwater Basin .........................................................................................3-10 3.3.2 Groundwater Historical Extraction ..................................................................................3-12 3.4 Summary of Existing and Planned Sources of Water ................................................................3-12 3.5 Recycled Water ..........................................................................................................................3-14 3.6 Supply Reliability........................................................................................................................3-14 3.6.1 Overview .........................................................................................................................3-14 3.6.2 Factors Impacting Reliability ..........................................................................................3-14 3.6.2.1 Environment ..........................................................................................................3-14 3.6.2.2 Legal .....................................................................................................................3-14 3.6.2.3 Water Quality ........................................................................................................3-15 3.6.2.3.1 Metropolitan ................................................................................................3-15 3.6.2.3.2 Main San Gabriel Groundwater Basin ........................................................3-15 3.6.2.3.3 La Habra Groundwater Basin .....................................................................3-18 3.6.2.4 Climate Change ....................................................................................................3-18 3.6.3 Normal-Year Reliability Comparison ..............................................................................3-18 3.6.4 Single-Dry Year Reliability Comparison .........................................................................3-19 arcadis.com ii 2015 URBAN WATER MANAGEMENT PLAN 3.6.5 Multiple-Dry Year Period Reliability Comparison ...........................................................3-19 3.7 Supply and Demand Assessment ..............................................................................................3-20 4 Demand Management Measures......................................................................................................... 4-1 4.1 Water Waste Prevention Ordinances .......................................................................................... 4-1 4.2 Metering ....................................................................................................................................... 4-3 4.3 Conservation Pricing .................................................................................................................... 4-3 4.4 Public Education and Outreach ................................................................................................... 4-3 4.5 Programs to Assess and Manage Distribution System