CALAFCO Annual Conference 2011

EMWD Recycled Water ProgramHossein Juybari, PE

Exploring New Boundaries

EMWD Overview

• 555 square miles in southwest Southern California

• Population of 675,000 / 40% ultimate build-out

• Imports approximately 80% of water from SWP and CRA

• Strategy: Reduce dependency on imported water supplies

Populations

• Through the past decade EMWD’s service area was one of the fastest growing regions in CA

• Populations has doubled since 1990• The service Area population will be

doubled again by 2035

Imported70,268

59%

Local49,781

41%

EMWD’s Recycled Water Program History

• EMWD began treating wastewater within its service area in the 1960’s

• Originally, treated effluent was disposed of through on-site percolation/evaporation ponds.

• In 1991, through a U.S. Bureau of Reclamation grant, EMWD began to develop a recycled water “backbone” to expand recycled water use Sun City Regional Water Reclamation Facility under

construction in 1965

EMWD’s Recycled Water Backbone

• Four operating reclamation facilities that treat 45 million gallons per day (MGD)

• Over 200 miles of pipeline

• 20 pumping facilities• 16 MG of total service

level storage (11 MG in construction)

• More than 2 billion gallons of recycled water storage

Recycled Water System Growing Pains

• Over time, EMWD’s customer base grew• EMWD continued to expand the system

to meet more demands• To better serve the customers and to

increase the M & I customer base, the previous gravity system was pressurized:– New storage pond pumps– Upgrade existing pumps– Additional transmission lines– Pressure regulating valves– Service level storage– Booster stations

EMWD’s Current Recycled Water Program

• 2003; EMWD adopted a “Mandatory Use” Policy

• 2007; Released draft process and procedures & standards and specifications

• 2008; Began developing Retrofit Program

• 2009; EMWD completed Recycled Water Strategic Plan with the main Objectives:– Maximize “beneficial use of

recycled water” & “potable water offsets”.

• 2010; Completed Recycled Water Master Plan

• 2011; Completed Intergraded Resources Plan (IRP)

Hemet Golf Club / Four Seasons HOA Retrofit

EMWD Recycled Water Rate

• Ag Recycled Water $90.25 Per AF

• Ag Recycled Water (Demand) $249.25• Non Ag Recycled Water $311.50 • Potable Water Rate –Irrigation $1180• Potable Water Rate - Ag Users $1034

EMWD Usage

• Total Customer Use during 2010: 28,000 AF

• Total Treated Flow = 46,500 AF

• Total Potable Water Consumption = 104,000 AF

• Currently 60% of Sewer water being used , but the goal is 100% utilization

Score Cards

• % of RW used to Wastewater • % of RW water to overall water

consumption

So, What Are the Trend for usage?

• What % of wastewater (recycled) is being used globally?– U.S.A.

= ~5%– Australia = 15%– Israel =70%

• What % of wastewater (recycled) is being used nationally?– Florida = 40%– State of California = 15%

SJVRWRF

PVRWRF

2010 Usage by user class

Usage History

Usage Type 2003 2004 2005 2006 2007 2008 2009 2010

AGRICULTURAL 12,644 14,622 13,693 14,150 19,434 19,652 18,168 13,796

CONSTRUCTION 146 325 389 819 633 88 19 27

ENVIRONMENTAL 1,875 1,377 2,027 1,232 2,393 3,068 2,805 1,999

GOLF COURSE 1,795 1,983 2,496 2,857 3,335 3,016 2,297 2,019

IN LIEU 4,630 4,785

LANDSCAPE 805 1,091 1,105 1,343 1,525 1,646 2,041 2,022

M & I 32 6 8 331 1,650 2,949

WHOLESALE 3,650 4,809 692 999 412 193 926 649

Grand Total 20,914 24,207 20,434 21,406 27,739 27,994 32,536 28,246

UWMP 2005 -2035 EMWD Water Demand (AFY)

Note: Based on regional projections, wholesale agency information and includes compliance with the Water Conservation Act of 2009, SB

x7-7 for EMWD retail demand

2005 2010 2015 2020 2025 2030 20350

50,000

100,000

150,000

200,000

250,000

300,000

350,000

Retail Potable Water Sales Water Sales to Other Agencies Other Water Uses/Losses

Recycled Water Key Initiatives

• Mandatory Use Policy• RW Strategic Plan• Integrated Resources Plan• RW Master Plan• HR30 / ARRA projects

EMWD Strategic PlanAction Plan for a Project

• Strategic Plan 2010: under Water Supply & Reliability

– Strategic Goal: Provide a safe & reliable supply of Water, at reasonable cost.

• Strategic Objective IV (Recycling): Maximize the Recycled Water use in an environmentally responsible manner

– Tactics: Develop Strategies to achieve the highest beneficial use of Recycled Water

Action Plan: Develop strategies to advance an Indirect Potable Reuse (IPR) Program

Recycled Water System Strategic PlanJune 2009• Purpose of the Plan was to Identify

Strategies to Meet District Goals

• District Goals:– Achieve Zero Discharge – Maximize Potable Water

Offset– Minimize Cost– Optimize Salt Balance

Challenges

Managing Seasonal Variations in Demands Highly Weather Dependent

Pursuing "Business As Usual“ Customers Will Not Allow District to Meet Its Goals

Therefore, Need to Pursue Non-Traditional Demands (Special Projects)

Recycled Water System Strategic Plan

All IRP Water Supply Strategies Implemented by 2035

Local 54%

Import 46%

Challenges

• Development Conditioning

• Plan Check Process

• Fair Share Analysis / Cost sharing

• Recycled Water Guidelines

• Supply and Demand Management

Future Projects & Trends

• Maximize the Recycled Water usage (100% utilization)

• Integrate Recycled Water data

• Optimized Recycled Water System

• Recycled Water Storage Management Study

All the water that ever was is…

Questions?