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Who Uses The Water?

Below is the break down of how our state and city use water.


Where does our water come from?

Almost all of the water we use comes from the hydrologic cyce (blue water).


  • Surface water (rivers, glacial, rain, run-off), captured in reservoirs
  • Ground Water, point source use
  • Desalination (very small proportion and very expensive)

California Water System

  • Primary Sources: Sierra Nevada Mountains, San Joaquin Delta, Colorado River

San Diego Water provider chain

  • Projects -> Metropolitan Water District -> San Diego County Water Authority -> City of San Dieog Water Department 
  • 90% SDCWA
  • 10% Local