Water Talks: A Bay-Delta Fix: Impacts to Your Water Supply and Wallet Overview

Thomas V. Wornham, Chair, Board of Directors

February 20, 2013

Dennis Cushman ◦ Water Authority Assistant General Manager

◦ Overview of Bay-Delta, Bay-Delta Conservation Plan and potential impacts to San Diego water agencies and ratepayers

Barry Nelson ◦ Natural Resources Defense Council Senior Policy Analyst

◦ Overview of Conceptual Alternative Portfolio Approach to Bay-Delta fix

Q & A after each presentation

Twitter hashtag: #watertalks

Follow our tweets @sdcwa

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Importance of Bay-Delta

San Francisco Bay

LAKE SHASTA

LAKE OROVILLE

State Water Project (Bay-Delta)

28% Colorado River

44%

Local Supplies and Conservation

28%

San Diego County imports ~70% of its water supply

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Total = 578,000 AF

Imported Water

Metropolitan Water District

552,000 AF

95%

Local Supplies

26,000 AF

5%

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Community’s Response:

“Never Again!” “No More Water Shortages!”

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Diversify supply sources Imported

◦ Imperial Irrigation District transfer through system and on-farm conservation projects

◦ Canal lining projects

Local Supply Development ◦ Conservation ◦ Recycling 17 active non-potable recycling projects countywide Potential for indirect and direct potable reuse projects

◦ Brackish groundwater recovery

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Invest in regional water delivery, storage

and water treatment

$3.6 billion Capital Improvement Program ◦ Ensure a reliable treatment & delivery system

$2 billion of investments in past decade alone

◦ Protect the region from imported supply cut-off (e.g.

earthquake, drought)

$1.5 billion Emergency Storage Project

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Historic Investments in Infrastructure

Implements diversification strategy Desalination supplies included in

2005 and 2010 Water Authority Urban Water Management Plans

Nov. 29, 2012: Water Authority Board of Directors approved 30-year Water Purchase Agreement with Poseidon Resources

December 2012: ◦ Project financing complete ◦ Construction began

2016: Project operations commence

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Metropolitan Water District

Imperial Irrigation District Transfer

All American & Coachella Canal Lining

Local Surface Water

Groundwater

Conservation (existing and additional)

2012 1991

Total = 612 TAF

Recycled Water

274 TAF

(45%)

61 TAF

(10%)

18 TAF

(3%)

24 TAF

(4%) 70 TAF

(11%) 80 TAF

(13%)

85 TAF

(14%)

552 TAF

(95%)

26 TAF

(5%)

2020

Total = 779 TAF

231 TAF

(30%) 48 TAF

(6%)

27 TAF

(4%)

44 TAF

(6%)

103 TAF

(13%) 80 TAF

(10%)

190 TAF

(24%)

56 TAF

(7%)

Seawater Desalination

Total = 578 TAF

TAF=Thousand Acre-Feet

Increasing San Diego County's Water Supply Reliability through Supply Diversification

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San Diego County: 1991 vs. 2013

1991 2013

578

Water use (thousand acre-feet)

542 $110*

$186

Gross Domestic Product (billions)

Jobs (millions)

1.08

1.3

2.5

3.1

Population (millions)

$549*

Cost of water per acre-foot (full service treated water rate)

$1259

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* 2012 dollars

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