Building New and Sustainable Water Resources for Los Angeles Urban Water Institute Spring Conference February 2016 February 2016 Martin L. Adams, P.E. Senior Assistant General Manager – Water System Los Angeles Department of Water and Power the Road to Sustainability

Los Angeles 2 nd Largest City in America Population: 4 millionPopulation: 4 million 470 sq. mile area470 sq. mile area Average daily water use: 500 million galsAverage daily water use: 500 million gals Service elevations range from above 1800’ to sea levelService elevations range from above 1800’ to sea level About 75% of water served is delivered by gravityAbout 75% of water served is delivered by gravity 2

Another View of Los Angeles

The Water Resource StoryBayDelta LA Aqueduct Colorado River Aqueduct State Water Project Sierra Mountains Local Groundwater, Stormwater, Conservation & Recycling 4

Growing Reliance on MWD 5

Creating Less Reliance on Imported Water Supplies Local Water Sustainability Recycled Water Groundwater Basin Remediation Stormwater Capture Water Conservation

TODAY Ave. Annual Demand of about 550,000 AF FUTURE By 2035 Annual Demand = 711,000 AF 7 Shifting Water Resources

Long-Term Effects of Water Conservation 8

9 Water Conservation Adopting a “new normal” for outdoor landscapes

Recent Focus on per Capita Water Use Reductions 10 17% reduction over 20 years 16% reduction over 6 years

Conservation includes Controlling Water Losses 11

Developing Local Supplies … is all about taking fuller advantage of the water we already have and which is native to the region

A Recycled Water Future Indirect Potable Reuse Non-Potable Reuse Urban Water Use Wastewater Treatment Water Treatment Nature Advanced Water Purification 13

Recycled Water Challenge: Location, Location, Location 14 The City treats over 350 million gallons of wastewater every day DCTWRP LAGWRP HTP & ECLWRP TIWRP Service Areas Valley Metro Harbor Westside Most of this resource presently goes to the ocean

TreatmentConveyanceReplenishmentExtraction Groundwater Replenishment Project 15

Capturing Lost StormwaterCentralized Distributed Dam Improvements Rain Gardens Spreading Basins Rain Barrels Cisterns 16 Capture comes in all sizes!

Groundwater Remediation Crucial to fully utilize existing San Fernando Basin water rights Key to converting local resources into drinking water

Recycled Water CO River Aqued. State Water Project West Branch Local Wells Recycled Water CO River Aqued. State Water Project East Branch Local Wells State Water Project West Branch State Water Project East Branch L.A. Aqueduct Generates hydropower L.A. Aqueduct Comparison of Energy / Carbon Intensity 18

ADDRESSING ENERGY CHALLENGES – – Energy efficient pumps and motors, and optimize equipment selection for best performance – – Planned start –up and testing to reduce grid and bill impacts – – Time of day pumping – – Reduce overall water usage 19

Projected Water Supply Energy Demands 20

the Road to Sustainability… Increased Reliability - local, drought resistant supply More Sustainable - lower carbon footprint Local Jobs - for construction and operation of new facilities Lower Cost - than imported water 21 … is the Road to the Future Los Angeles