Razak "The New Frontier: Potable Reuse and Ocean Desalination"

1. Contract Cities Association Fall Seminar and
Southern California Water Summit
November 8, 2014
Halla Razak
Director of Public Utilities
City of San Diego

2. 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

3. 85% of San Diego’s water is imported
San Diego
Bay Delta
Colorado River

4. Numerous Water Challenges
• Limited local & imported
supplies
• Recurring drought
• Population growth
• Bay Delta constraints
• Natural disaster risk
• Rising imported water costs
$1,200
$1,000
$800
$600
$400
$200
$0
Imported Water Cost
per Acre-Foot
1996
1998
2000
2002
2004
2006
2008
2010
2012

5. What Options Does San Diego Have?
City of San Diego:
• Water Conservation
• Groundwater Development
• Recycled Water
• Indirect Potable Reuse
5
(Pure Water)
Regional:
• Importing Water
• Water Conservation
• Desalination (SDCWA)

6. 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)
6

7. 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
7

8. 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

9. 9
San Diego at a Fork in the Road
Local Water Control
Most Economical
Creates sustainable new
water supply
Imported Water Dependent
Vulnerable to Rising Costs
Continued Ocean Discharge

10. Pure Water San Diego Saves Money
$2,000
$1,500
$1,000
$500
Pure Water
San Diego
System upgrades
w/o Pure Water
2015 2020 2025 2030 2035 2040 2045 2050
Ratepayer Costs (Millions)
Pure Water Secondary

11. 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

12. 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
12

13. 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