pure water san diego
DESCRIPTION
Halla Razak, Director of Public Utilities for the City of San Diego presented to the League of California Cities, San Diego Division on October 13, 2014.TRANSCRIPT
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Halla Razak Director of Public Utilities City of San Diego
League of California Cities San Diego Division October 13, 2014
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San Diego Public Utilities Department…
• Delivers high quality drinking water, collects and treats wastewater, produces and delivers recycled water, and generates green energy– every day
• Maintains and operates extensive infrastructure • Keeps rate-payer affordability top of mind
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85% of San Diego’s water is imported
San Diego
Bay Delta
Colorado River
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• Limited local & imported supplies
• Recurring drought • Population growth • Bay Delta constraints • Natural disaster risk • Rising imported water costs
Numerous Water Challenges
$0
$200
$400
$600
$800
$1,000
$1,200
1996
1998
2000
2002
2004
2006
2008
2010
2012
Imported Water Cost per Acre-Foot
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City of San Diego: • Water Conservation
• Groundwater Development
• Recycled Water
• Indirect Potable Reuse (Pure Water)
Regional: • Importing Water
• Water Conservation
• Desalination (SDCWA)
What Options Does San Diego Have?
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Pure Water: Our Opportunity
• A 20-year program to provide a safe, secure, and sustainable local water supply
• Provides over 1/3 of the City’s water (83-mgd)
• A cost effective, integrated water and wastewater solution
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Advanced Water Purification
• Advanced multi-barrier treatment process – Microfiltration and Ultrafiltration – Reverse Osmosis – Advanced Oxidation with Ultraviolet Light and Hydrogen Peroxide
Microfiltration & Ultrafiltration Reverse Osmosis Advanced Oxidation with UV Light & Hydrogen Peroxide
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Developing Our Local Water Supply
15 MGD
Wastewater will be purified at North City Plant and delivered to San Vicente Reservoir
Initial phase 2023
83 MGD
Wastewater will be purified at Harbor Drive and South Bay Plants and delivered to San Vicente and Otay Reservoirs
Long- term 2035
San Vicente Reservoir
Miramar Water Treatment Plant
Alvarado Water Treatment Plant
Lower Otay Reservoir
Otay Water Treatment Plant
Full Scale AWP Facility at North City
Harbor Drive Treatment
Facility
South Bay Treatment
Facility
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Wastewater Treatment System • Significant Regional Asset:
– 2.5 million served – 12 Participating Agencies – 4 Wastewater Facilities
• Point Loma is the main treatment facility – Operates with a 5-year
modified permit – Renewal application due
to EPA in January 2015
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Pure Water Supports Permit Renewal
• Commitment to Pure Water would divert flow from Pt. Loma
• Reduces treated water flow to the ocean
• Supports legislative changes to the Clean Water Act to allow for “secondary equivalency”
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Secondary Equivalency
• Secondary treatment achieves certain levels of water quality in the flow to the ocean
• We can achieve the same outcome and avoid expensive upgrades by reducing flow to the plant
• In the process we create Pure Water, while protecting ocean water quality
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Local Water Control
Most Economical
Creates sustainable new water supply
Imported Water Dependent
Vulnerable to Rising Costs
Continued Ocean Discharge
San Diego at a Fork in the Road
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Pure Water San Diego Saves Money
$500
$1,000
$1,500
$2,000
2015 2020 2025 2030 2035 2040 2045 2050
Rate
paye
r Cos
ts (M
illio
ns)
Pure Water Secondary
Pure Water San Diego
System upgrades w/o Pure Water
About $250 million in ratepayer savings
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Who Supports Pure Water?
• Elected Officials
– City Council Resolution, April 29, 2014
• Environmental Groups
• Wastewater Participating Agencies
• Professional Engineering Community
• Water Reliability Coalition
• Business Community
• Independent Rates Oversight Committee Friends of
Infrastructure
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Pure Water Program Next Steps • Stakeholder and Customer Outreach
– Underway and continuous
• Solicitation for Engineering and Technical Support Services
– Underway
• Finalize Facilities Plan and Cost Estimate/Rate Impact
– Fall 2014
• Point Loma Permit Application
– January 2015
• Secondary Equivalency Approval
– December 2015
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Summary • 20-year program to develop supply of safe, reliable,
sustainable local water supply
• Continued ocean environment protection – Diverts flows from Pt. Loma Wastewater Treatment Plant
• Cost-effective approach through an integrated water and waste water solution – Avoids unnecessary costly upgrades to Pt. Loma
– Reduces reliance on rapidly increasing price of water imports
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Questions?
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What Can I Do? • Visit our website: PureWaterSD.org • Register for tours: PureWaterSD.org/tours • Join our mailing list
Pure Water San Diego
@PureWaterSD
purewatersd