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The Federal Energy Management Program (FEMP) created a series of alternative water maps to help federal agencies strategically plan where to implement alternative water projects. Alternative water is water supplied by sustainable sources that can be used to help offset the use of fresh surface water and groundwater (such as lakes and aquifers).
Alternative water sources include:
- Harvested rainwater
- Captured condensate from air handling units
- Reclaimed wastewater.
Alternative water is typically used in non-potable applications such as irrigation, cooling tower make-up, and vehicle wash.