Definition of Wastewater / Greywater

The following types of water fall within the definition of
Wastewater / Greywater


  • Graywater that is collected and used on site.
  • Swimming Pool backwash
  • Air conditioner condensate
  • Cooling Tower Blow Down
  • Steam System Condensate
  • Fluid Cooler Discharge Water
  • Food Steamer Discharge Water
  • Ice Machine Discharge Water
  • Combination Oven Discharge Water
  • Industrial Process Water
  • Fire Pump Test Water
  • Theme Park Recreation Water
  • Foundation Drainage
  • Stormwater
  • Systems that combine rainwater and graywater are classified as graywater systems.


Sourced from:

Guidelines for Alternative Water Sources:
Indoor and Outdoor Non-Potable Uses
Los Angeles County Department of Public Health
February 2016