City of San Diego
San Diego Water Innovation
Opportunities
February 2014 – a look ahead
Halla Razak, P.E.
San Diego Public Utilities
Department…
• Delivers high quality drinking water, collects
and treats wastewater, produces delivers
recycled water, and generates green energy–
everyday
• Maintains and operates extensive
infrastructure
• Keep rate-payer affordability top of mind
2
San Diego Water/Wastewater Facts
Provide services to
8th largest US city &
surrounding area
Heavily regulated
by Federal &
State agencies
~$1B invested in
systems over last
5 years
Purchased water
costs of $209M
(43% of budget)
1.3M water &
2.5M wastewater
customers from
15 agencies
USEPA, CDPH,
San Diego Water
Board
More than
$412M planned
capital projects
over next 2 years
Annual payment
of $180M toward
$2B debt
3
California Water System Highlights
77% of the City of San Diego’s
water is imported
26%
Bay Delta
51%
Colorado River
23%
Local Supplies and
Conservation
4
City of San Diego
Water System Overview
Water System
• Three major treatment
plants over three service
areas
• Strategically located Miramar Water Treatment Plant
reservoirs to
capture/store local water
supply
• Complex system with
more than 3,300 miles of
pipelines
Alvarado Water Treatment Plant
Otay Water Treatment Plant
5
Water Supply Availability
• Limited local supplies
• Imported water at risk as
competition for the
resource rises
• Recurring drought
• Population growth
• Regulatory constraints
• Natural disasters/climate
change
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Imported Water Costs
Cost/Acre-Foot
$1,000
$800
$600
$400
$200
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
1998
1997
$0
1996
Imported Water Supply Cost
$1,200
Imported water costs have doubled since 2008
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What Options Does San Diego Have?
Regional:
City of San Diego:
• Importing from State Water
Project and Colorado River
• Water Conservation
• Desalination (SDCWA)
• Groundwater Development
• Recycled Water
• Indirect Potable Reuse
(Pure Water)
8
83-mgd of Pure Water: Our Opportunity
• Initial phase: 15 mgd of purified water to San Vicente Reservoir
(7 - 8% of local supply)
– Our purest source of raw water
– Reliable and locally controlled
– Drought proof, climate independent
– More control over local investments
– Add economic benefit to local industry
• membrane companies, construction jobs
– Decreases reliance on imported water
– Reduces ocean discharge
9
Wastewater System Overview
Wastewater System
• Geographically distributed
• Pt. Loma is the hub
• Collect, treat & dispose
wastewater from
San Diego & 12 other
agencies
• Pt. Loma operates with a
5-year modified permit
Recycled Water System
North City Water Reclamation Plant
Metro Biosolids
Center (MBC)
Point Loma
WWTP
• 3 Pump Stations/80 Miles
of Purple Pipes
South Bay Water Reclamation Plant
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Pure Water Supports Permit Renewal
• Long-term program specifics
• Permit renewal application
due January 2015
• Committing to investment in
Pure Water could result in
substantial savings at Pt. Loma
• Reduces treated water
discharge volume into ocean
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San Diego Water at a Fork in the Road
Local Water Control
Imported Water Dependent
Most Economical
Vulnerable to Rising Costs
Creates sustainable new
water supply
Continued Ocean Discharge
San Diegans will save over
$2.5 billion dollars over
the life of the Pure Water
solution
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San Diego Water
Total Water & Wastewater Services Cost
Millions
Secondary Treatment at Point Loma Vs. Pure Water
$2,800
$2,600
$2,400
$2,200
$2,000
$1,800
$1,600
$1,400
$1,200
$1,000
$800
FY2015
FY2020
FY2025
FY2030
Pure Water
FY2035
FY2040
FY2045
FY2050
Secondary
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Pure Water Program Elements
•
•
•
•
Pure Water demonstration program
Permit package development
Regulatory and legislative initiative
Outreach program expansion to include
enhanced public engagement and education
• Financial plan
• Capital program implementation
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Next Steps
•
•
•
•
•
•
•
Request Council Resolution for Pure Water: Spring 2014
Invest in outreach education: Spring 2014
Roll out aggressive conservation program: Spring 2014
Solicit services for program manager: Summer 2014
Prepare waiver application: Fall 2014
Optimize scenarios & costs: 2014/15
Work with elected officials, regulators, and stakeholders
to develop consensus and secure approvals: 2014/15
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Back-up Slide
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Investing in our Water Future
•
•
•
•
•
•
We know that:
Imported water rates rising
Need to maintain/operate existing
systems
Ongoing water & wastewater
capital improvements
2015 Pt. Loma permit renewal
Pure Water implementation at
15 mgd
46 mgd Point Loma offload
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Pure Water Process
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