Elsinore Valley Municipal Water District Urban Water Management Plan Final June 2016 Prepared for: Elsinore Valley Municipal Water District 31315 Chaney Street P.O. Box 3000 Lake Elsinore, CA 92531-3000 Prepared by: MWH 300 North Lake Avenue, Suite 400 Pasadena, CA 91101 This page intentionally left blank 2015 Urban Water Management Plan EVMWD TABLE OF CONTENTS SECTION 1 INTRODUCTION AND OVERVIEW ....................................................................................................... 1-1 1.1 Background and Purpose ............................................................................................................................................... 1-1 1.2 Urban Water Management Planning and the California Water Code ............................................................................. 1-2 1.2.1 Urban Water Management Planning Act of 1983 ............................................................................................... 1-2 1.2.2 Applicable Changes to the Water Code since 2010 UWMPs ............................................................................. 1-3 1.2.3 Water Conservation Act of 2009 (SB X7-7) ........................................................................................................ 1-4 1.3 Urban Water Management Plans in Relation to Other Planning Efforts ......................................................................... 1-5 1.4 UWMP Organization ...................................................................................................................................................... 1-5 SECTION 2 PLAN PREPARATION .......................................................................................... 2-1 2.1 Basis for Preparing a Plan ................................................................................................................................ 2-1 2.1.1 Public Water Systems ........................................................................................................................... 2-1 2.1.2 Agencies Serving Multiple Service Areas/Public Water Systems ................................................................ 2-2 2.2 Regional Planning ........................................................................................................................................... 2-2 2.3 Individual or Regional Planning and Compliance ................................................................................................ 2-3 2.3.1 Regional UWMP ................................................................................................................................... 2-3 2.3.2 Regional Alliance .................................................................................................................................. 2-3 2.4 Fiscal or Calendar Year and Units of Measure .................................................................................................... 2-3 2.4.1 Fiscal or Calendar Year ......................................................................................................................... 2-3 2.4.2 Reporting Complete 2015 Data .............................................................................................................. 2-3 2.4.3 Units of Measure .................................................................................................................................. 2-3 2.5 Coordination and Outreach ............................................................................................................................... 2-4 2.5.1 Wholesale and Retail Coordination ......................................................................................................... 2-5 2.5.2 Coordination with Other Agencies and the Community.............................................................................. 2-5 2.5.3 Notice to Cities and Counties ................................................................................................................. 2-6 SECTION 3 SYSTEM DESCRIPTION........................................................................................ 3-1 3.1 General Description ......................................................................................................................................... 3-1 3.2 Service Area Boundary Maps............................................................................................................................ 3-2 3.3 Service Area Climate ....................................................................................................................................... 3-3 3.3.1 Climate Change .................................................................................................................................... 3-4 3.4 Service Area Population and Demographics ....................................................................................................... 3-5 3.4.1 Other Demographic Factors ................................................................................................................... 3-6 SECTION 4 SYSTEM WATER USE .......................................................................................... 4-1 4.1 Recycled versus Potable and Raw Water Demand ............................................................................................. 4-1 4.2 Water Uses by Sector ...................................................................................................................................... 4-1 4.2.1 Demand Sectors Listed in Water Code.................................................................................................... 4-4 4.2.2 Demand Sectors in Addition to Those Listed in Water Code ...................................................................... 4-5 4.2.3 Recycled Water Demands ..................................................................................................................... 4-6 4.3 Distribution System Water Losses ..................................................................................................................... 4-7 4.4 Estimating Future Water Savings ...................................................................................................................... 4-8 2015 Urban Water Management Plan i EVMWD Table of Contents 4.5 Water Use for Lower Income Households .......................................................................................................... 4-8 4.6 Climate Change ............................................................................................................................................ 4-10 SECTION 5 BASELINES AND TARGETS .................................................................................. 5-1 5.1 Guidance for Wholesale Agencies ..................................................................................................................... 5-1 5.2 Updated Calculations from 2010 UWMP ............................................................................................................ 5-1 5.2.1 Update of Target Method ....................................................................................................................... 5-1 5.2.2 2010 U.S. Census Data ......................................................................................................................... 5-2 5.2.3 SB X7-7 Verification Form...................................................................................................................... 5-2 5.3 Baseline Periods ............................................................................................................................................. 5-2 5.3.1 10-15 Year Baseline Period (Baseline GPCD) .......................................................................................... 5-3 5.3.2 5-Year Baseline Period (Target Confirmation) .......................................................................................... 5-3 5.4 Service Area Population ................................................................................................................................... 5-4 5.5 Gross Water Use ............................................................................................................................................. 5-4 5.6 Baseline Daily Per Capita Water Use ................................................................................................................. 5-5 5.7 2015 and 2020 Baselines and Target Summary .................................................................................................. 5-6 5.8 2015 Compliance Daily per Capita Water Use (GPCD) ........................................................................................ 5-7 5.8.1 Adjustments to 2015 Gross Water Use .................................................................................................... 5-8 5.9 Regional Alliance ............................................................................................................................................. 5-8 SECTION 6 SYSTEM SUPPLIES ............................................................................................. 6-1 6.1 Purchased or Imported Water ........................................................................................................................... 6-1 6.2 Groundwater ................................................................................................................................................... 6-2 6.2.1 Basin Description