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O.C.’s Water Cycle
25%
TreatedWastewater
TreatedWastewater WastewaterWastewaterUntreated
ImportedWater
Local Rainfall
Santa AnaRiver FlowSanta AnaRiver Flow
Used Water Upstream
Rainfall and Snowmelt
Prado Dam
Orange CountyGroundwater BasinOrange CountyGroundwater Basin
Water Imported from the Colorado River
& Northern California
Water Imported from the Colorado River
& Northern California
TreatmentTreatment
2.5 MillionWater Users
0.6 MillionWater Users
North and CentralOrange County
90%
(MWD)
SouthernOrange County
MWD Direct
75%of water demands
of water demands
of water demands
of water demands
10%
Localgroundwater
basins
Localgroundwater
basins
Recycled water for irrigation
Recycled water for irrigation
Advanced Purified Water
&
Pacific Ocean