2015 Urban Water Management Plan Overview Gordon Ng, P.E. June 15, 2016

2015 Urban Water Management Plan (UWMP) Current Challenges Historic drought in California An extended 16-year drought on the Colorado River watershed Low groundwater and local reservoir levels throughout Southern California due to dry hydrology Reduction in SWP deliveries due to the restrictions in place to protect endangered Delta smelt and salmon Drought and environmental mitigation impacting the supply available from the Los Angeles Aqueduct Mandated conservation under SWRCB emergency regulation UWMP Provides a Look Ahead at EMWD Reliability Covers a 25 year planning horizon Evaluates supplies available to determine if they are adequate to meet existing and future demands under specified conditions Reports progress on Water Conservation Act of 2009 (SBX7-7)

Components of UWMP Introduction and Overview - Why we need UWMPs Plan Preparation - Coordination and Outreach System Description - Overview of EMWD, facilities, climate and Population System Water Use – Sources and uses of water Baselines and Targets – SBx7-7 (“20 x 2020”) calculations System Supplies - Overview of existing and proposed projects Water Supply Reliability - Is supply reliable? Water Shortage Contingency Planning - Overview of Water Shortage Contingency Plan Stages Demand Management Measures - Conservation Plan Adoption, Submittal and Implementation – Dates for adoption and submittal

Reduction in imported deliveries due to State Drought Regulations Recent Supply Sources Water Received by Source (AF) 2010-2015 Reduction in imported deliveries due to State Drought Regulations Focus on local supplies Imported water reduced due to mandatory restrictions MWD allocation less than a 5% reduction

2015 Retail Potable/Raw Water Use Distribution

2015 Retail Recycled Water Use Distribution

Population Growth and Future Projections EMWD is only 40% built out an has room to grow. Population projection based on 2015 Empire Economic Absorption Study (using DOPP data)

Projected Retail Demands (2020 – 2040)

Projected Retail Supplies (2020 – 2040)

Projected Wholesale Demands (2020 – 2040) Includes direct and recharge deliveries

Projected Wholesale Supplies (2020 – 2040)

Water Conservation - Progress Towards SBX7-7 Target EMWD’s retail demands were at 130 GPCD in 2015, a 34% reduction from the baseline average Target calculated using Method 2 (Water Use Efficiency Standards)

Continued Investments in Local Supplies Recycled Water Full utilization of recycled water Increases from approximately 45,000 AF annually to over 53,000 AF annually Brackish Water Desalination Provides a potable water supply from an otherwise unusable source Protects basin groundwater quality Future expansion (Perris II Desalter) Potable Groundwater Moreno Valley North Perris

MWD’s 2015 UWMP Key Findings Meet challenges with proactive planning Integrated Resources Plan Water Surplus and Drought Management Plan Water Supply Allocation Plan MWD supply planning includes development of diverse portfolio Investments in local resources Conservation Proactive management of Colorado River and State Water Project resources Supply is sufficient to meet member agency demands (2020 – 2040)

Remaining Steps Activity Date Draft released for Public Review May 16, 2016 Public Hearing/Board Adoption June 15, 2016 Submittal to California DWR July 1, 2016 Submittal to CA State Library, Service Area Cities and County July 15, 2016

Contact Information Elizabeth Lovsted, P.E. Senior Civil Engineer (951) 928-3777 Ext. 4307 Email: lovstede@emwd.org Gordon Ng, P.E. Civil Engineer (951) 928-3777 Ext. 4512 Email: ngg@emwd.org