Water Use Efficiency Ethic
Southern California Water Committee
March 30, 2016
Dave Pettijohn,
Director of Water Resources
Los Angeles Department of Water and Power
Local and State
Drought Responses
•
Mayor’s Executive Directive Order #5
–
•
LA’s Sustainable City pLAn
–
–
–
•
Reduce GPCD 20% by 2017
Reduce GPCD 20% (2017), 22.5% (2025),
25% (2035)
50% Reduction of imported purchased
by 2025
50% of water locally sourced by 2035
Governor\ SWRCB Regulations
–
–
Mandates 25% Conservation Statewide
Extension of restrictions until October
2016
2
ED5 Progress Tracking
3
Driving Values
• LADWP’s Commitment to Supply
Reliability
– High reliability and high water-use efficiency
– Extremely low risk of a sustained water
shortage
– Diverse water supply, resilient to climate
variability
– Maintain public confidence in supply
reliability
• Commitment to Quality of Life
– High Quality Water Supply
– California Friendly urban landscape
– Enjoying water, but not wasting
4
Sustainability Planning Efforts
2015 Urban Water
Management Plan
Recycled Water
Master Planning
Documents (2012)
Water Conservation
Potential Study (ongoing)
Mayor’s ED5 &
Sustainable City
pLAn (2015)
Stormwater
Capture
Master Plan
(2015)
GSIS Remedial Investigation
Update Report (2015)
5
Local Water Supply Program
Recycled Water
Stormwater Capture
Water Conservation
SF Groundwater Basin Remediation
Local Water Supply Reliability
6
Local Supply Development
Conservation
Goal: 110,100 AFY – 143,900 AFY
Local City Ordinances
Commercial Programs
CONSERVE
Residential Programs
Public Outreach & Education
$1.75
/sq ft
Partnerships
7
Long-Term Effect of Conservation on
Water Demand
8
Local Supply Development
Recycled Water
Goal: 75,400 AFY
NPR: 45,400 AFY
Non-Potable Reuse
IPR/GWR: 30,000 AFY
Indirect Potable Reuse
Wastewater
Treatment
Urban Water Use
Water Treatment
Advanced Water
Purification
Nature
9
Local Supply Development
Stormwater Capture
SW Capture Potential: 68,000 – 114,000 AFY
Dam Improvements
Centralized
Cisterns
CAPTURE
Distributed
Green Streets
Spreading Basins
Rain Barrels
10
SF Groundwater Basin
Planned groundwater basin
remediation will be crucial to restoring
the health and beneficial uses of the
San Fernando Basin
GAC Treatment at Tujunga Well Fields –
Pilot Study
Pollock Water Treatment Facility
11
11
Multiple Reliability Planning
Scenarios
FYE 2011 - 15 Average
Total Demand: 550,130 AF
FYE 2039 - 40 Single Dry
Total Production: 709,500 AFY
LAA
7%
MWD
57%
LAA
29%
FYE 2039 - 40 Average
Total Demand: 675,700 AFY
Local
GW
12%
RW
7%
MWD
44%
RW
6%
Groundwater
23%
Conservation
20%
LAA
42%
RW
2%
Groundwater
24%
MWD
11%
Conservation
16%
12
Thank You
13
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