emwd recycled water program hossein juybari, pe exploring new boundaries
TRANSCRIPT
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CALAFCO Annual Conference 2011
EMWD Recycled Water ProgramHossein Juybari, PE
Exploring New Boundaries
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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
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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
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Imported70,268
59%
Local49,781
41%
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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
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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
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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
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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
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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
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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
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Score Cards
• % of RW used to Wastewater • % of RW water to overall water
consumption
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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
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2010 Usage by user class
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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
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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
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Recycled Water Key Initiatives
• Mandatory Use Policy• RW Strategic Plan• Integrated Resources Plan• RW Master Plan• HR30 / ARRA projects
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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
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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
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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
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All IRP Water Supply Strategies Implemented by 2035
Local 54%
Import 46%
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Challenges
• Development Conditioning
• Plan Check Process
• Fair Share Analysis / Cost sharing
• Recycled Water Guidelines
• Supply and Demand Management
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Future Projects & Trends
• Maximize the Recycled Water usage (100% utilization)
• Integrate Recycled Water data
• Optimized Recycled Water System
• Recycled Water Storage Management Study
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All the water that ever was is…
Questions?