The Sanitation Districts of Los Angeles County have a long history of water reuse and operate 11 wastewater treatment plants that treat over 500 million gallons per day of wastewater. Approximately 200 million gallons per day of treated water is recycled for reuse purposes, with the number of reuse sites increasing. Challenges for recycled water distribution include the high cost of infrastructure and balancing daily and seasonal supply and demand.

1. Sanitation Districts of Los Angeles
County
Recycled Water Program
Grace R. Chan
September 26, 2013

2. Long history of water reuseLong history of water reuse

3. Water reuse beginsWater reuse begins

4. Wastewater treatment facilitiesWastewater treatment facilities
Lancaster
Palmdale
La Canada
Whittier Narrows
JWPCP
Long Beach
Los Coyotes
San Jose
Creek
Trunk Sewers
Valencia
Saugus
Pomona
L.A. Glendale
D.C. Tillman
Hyperion
Terminal Island
Wastewater System
 23 Sanitation Districts
 78 cities
 820 square miles
 5.7 million served
 11 treatment plants
 500 MGD treated
 200 MGD for reuse
 1400 mi trunk sewers
Sanitation Districts ofSanitation Districts of
Los Angeles CountyLos Angeles County

5. Where is the RW Recharged?Where is the RW Recharged?

6. Number of reuse sites increaseNumber of reuse sites increase

10. Distribution of usageDistribution of usage

11. Challenges AheadChallenges Ahead
Distribution infrastructure is costly
Daily and seasonal supply/demand