Halla Razak Director of Public Utilities City of San Diego

League of California Cities San Diego Division October 13, 2014

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

85% of San Diego’s water is imported

San Diego

Bay Delta

Colorado River

• 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

5 5

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?

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

6

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

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

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

9

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”

10

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

11

12

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

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

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

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

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

16

Questions?

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