Water Conservation inthe San Diego Region

Bill JacobySan Diego County Water Authority

North Bay Water Association April 2, 2004

Wholesale supplier– 23 member agencies– Provide up to 90% of

county’s water supply

5 Pipelines– 263 miles (gravity flow)

Emergency storage reservoir

Service area 909,000 acres

San Diego County Water Authority

SDCWA SERVICE AREA

Water Supply Portfolio

2003

Conservation6%

RecycledWater2%

Local Surface Water5%

Groundwater2%

MWD Imported85%

2020

Recycled Water6%

MWD Imported 24%-33%

IID Transfer 21%

Canal Lining Transfer 9%

Local SurfaceWater 9%

Groundwater 6%

Conservation10%

Seawater Desalination 6%-15%

Local Resources to Meet Demand

Water Conservation

Recycled Water

Groundwater

Seawater Desalination

Surface Water

UWMP

Projected water resources mix for 20 years

Plan must be updated every 5 years

Must describe water demand management, i.e., conservation, measures

CUWCC

California Urban Water Conservation Council

Increase efficient water use statewide through partnerships among urban water agencies, public interest organizations, and private

entities

Three signatory groups– Urban water suppliers– Public interest groups– Other interested parties 

Memorandum of Understanding

Best Management Practices

Urban Water Conservation Practices intended to reduce California’s long-term water use

Reduce the State’s water demand using sound economic criteria. 

Integrate urban water conservation practices into planning and management of California’s water resources– 14 BMPs– 11 PBMPs

CALFED

Long-Term Supply Option

Demand Management Saves capital & operating costs

– Utility– Consumer

Avoids environmental impacts Reliable local supply Reduces wastewater flows

Short-Term Supply Option

Look for immediate water savings

Implement in times of drought or other emergencies

For the last decade the focus has been on long-term demand management

Helps avoid peaking

Success of Conservation Programs

Between fiscal year 1990 and 2003

– Population increased by 16.7%

– Total water use remained virtually the same

Attributable to strong commitment to water conservation

Single-Family Water Use

Toilets19%

Clothes Washers13%

Faucets7%

Showers/Baths16%

Outdoor Irrigation43%

Dishwashers2%

Water Use

Outdoor use is greatest residential water use

Toilets are greatest indoor residential water use

Residential Conservation Programs

Residential HEW Program– 29,300 clothes washers have been

replaced– Saved 3,180 AF

Residential ULFT Program– Retrofitted 481,100 old toilets– Saved 134,680 AF

Showerheads– Retrofitted 556,500 old showerheads

– Saved 37,470 AF

CII Conservation Programs

Water-Pressurized Brooms

– Saves 50,000 GPY

Hospital X-Ray Film Processors

– Saves 1,042,723 GPY

CII Conservation Programs

Pre-Rinse Spray Valves

– Saves 100,000 GPY

Multi-Load Clothes Washers for Laundromats

– Saves 100,000 GPY

ULFTs/urinals

Landscape Conservation Programs

Residential Survey Program

Landscape Conservation Programs

Professional Assistance for Landscape Management

– Site evaluation and comprehensive report

Eto Landscape Irrigation Controllers

– Commercial & Residential

0

100

200

300

400

500

Jul-01 Aug-01 Sep-01 Oct-01 Nov-01 Dec-01 Jan-02 Feb-02 Mar-02 Apr-02 May-02 Jun-02

Irrigation Use Irrigation Req

units/month

All units HCF

Water Used vs Water Required

Future Landscape Programs

Eto Landscape Irrigation Controllers

– Commercial° Saves 479,073 GPY

– Residential° Saves 47,900 GPY

Commercial Landscape Incentives Program

– Small, commercial landscapes for hardware to improve irrigation efficiency

– Saves 8,341,786 gallons per site

Future Landscape Programs

Landscape Conservation Outreach

– Target nurseries and home improvement stores

– On-the-spot education to customers on the water the horticultural needs of plants

School Education Programs

18 programs for K-12th grade

Reaches 125,000 students a year

Serves 700 schoolcountywide

Conservation Message Strategies

Available tools to relay conservation message– Conservation materials– Newsletters– Bill inserts– Web sites– Water conservation garden tours– Special events– Speakers bureau– Conservation classes– School Water Education Program