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A Local Agency Perspective

The Economics of the

Bay Delta Conservation Plan (BDCP):

ACC – OC Infrastructure Summit

May 30, 2013

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• Background on IRWD

• IRWD’s water supply and system reliability

• Connecting the BDCP to IRWD

• What else is being done?

• Questions

Today’s Discussion

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California Special District governed by a publicly-elected board.

IRWD customer base:• Residential population: 350,000• Daytime population: over 500,000• Service connections: 102,381

IRWD service area:• 181 square miles (20% of Orange County)• All or part of six cities and unincorporated county:

About IRWD

IrvineTustin

Orange

Lake ForestNewport Beach

Costa Mesa

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IRWD Services and System Statistics:

Potable Water: Four treatment plants, 25 wells, 1,500 miles of pipelines.

Wastewater: Nearly 1,000 miles of sewage collection pipelines.

Recycled Water: Two water recycling facilities (28.0 MGD + 5.5 MGD) and approximately 500 miles of recycled water pipelines.

Urban Runoff Treatment: The San Joaquin Marsh and 31 built and planned constructed wetland treatment sites.

Our Four Lines of Service

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IRWD’s Water Supply Portfolio and System Reliability

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Where Does Southern California get its water?

Local Supplies Groundwater & Recycling

Local SuppliesLA Aqueduct

Conservation

Colorado River Aqueduct700,000 AF

State WaterProject

Entitlement 2 Million AF

Transfers & Storage Groundwater Banking

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IRWD’s Historical Water Supply

Other11%

Clear Groundwa-ter

10%

Imported Water64%

Recycled Water15%

Water Supply by Type

1990 Supplies0

20000

40000

60000

80000

6780

46180

10400

7500

Acr

e-F

eet

per

Yea

r

IRWD water supply in 1990

Conversion: 1 acre-foot = 325,851 gallons = 1,233,482 liters

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Connecting the BDCP to IRWD

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IRWD and the BDCP

The BDCP will provide benefits to all of California.

Regional:

Local:

Statewide:

Industry, Agriculture,Homes, Environment

Water Quality,

Water Reliability

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What else is being done?

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1. Defers Met’s need to construct and operate new water supply projects;

2. Reduces region’s reliance on imported supplies; and

3. Improves supply diversity for local water agencies:

- Potable Water Supply Projects

- Recycled Water Program

- Water Use Efficiency

IRWD Projects with Met Funding

Regional Benefits from Met Funding Local Projects:

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• Dyer Road Well Field Seasonal Shift Program- Incentivized IRWD to pump wells during MWD peak usage periods- From 1988 through 2008, total LRP funding: $15 million

• Irvine Desalter Project Potable Treatment Plant- New local water supply: 63,000 acre-feet of treated groundwater- From 2006 through 2027, estimated LRP funding: $15 million

• Wells 21 and 22 Desalter Project- New local water supply: 121,000 acre-feet of treated groundwater- From 2012 through 2037, estimated max LRP funding: $30 million

Potable Water Supply Projects:

IRWD Projects with Met Funding

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IRWD Recycled Water Program

IRWD Projects with Met Funding

• Michelson Water Recycling Plant – LRP1- Assisted IRWD to develop RW production: 3 MGD to 13 MGD- From 1986 through 2011, 186,000 acre-feet of recycled water- Incentive at $154 per AF; total LRP Funding: $29 million

• IRWD Water Recycling Plants – LRP2- Assisted IRWD to develop RW production: 13 MGD to 18 MGD- From 2005 through 2030, 131,000 acre-feet of recycled water- Incentive at $117 per AF; estimated LRP funding: $15 million

Conversion: 1,000 AF per year = 0.9 MGD

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Water Use Efficiency Initiatives

IRWD Projects with Met Funding

• Met Incentives to IRWD from 2005 through 2012:- Residential Incentives: $1.3 million- Commercial Incentives: $3.1 million

• Met funding incentives based on Met’s avoided cost.- Incentive at $154 per AF- Funded through Met’s Water Stewardship Fund ($43 per AF)- Met incentives leveraged by IRWD at average of $225 per AF

• “Lifetime” Water Savings = 19,000 acre-feet

• On-going program.

Tactical Incentives• Indoor &

Outdoor Technologies

• Cost-Effective Programs

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IRWD Water Supply Reliabilityinto the Future

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Clear Ground- wa-

ter, 32%

Treated

Ground- wa-

ter, 18%

Recy-cled

Water; 24%

Other; 3%

Im-ported Water; 22%

* Excludes IRWD water banking(50,000 AF storage)

IRWD has a diverse, reliable water supply.

IRWD’s Water Supply Portfolio Today

1990 1998 2003 2006 2011 20350

20,000

40,000

60,000

80,000

100,000

120,000

Fiscal Year

Acr

e-fe

et p

er Y

ear

2011 Total Water Supply, By Type

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www.IRWD.com

IRWD Contact Information

Paul Cook, General Manager

phone: (949) 453-5590

email: cook@irwd.com