Nonpotable Water

Reduce freshwater demand by 36-75% by equipping neighborhoods to use non-potable water.


Water savings can be achieved by using nonpotable water for purposes where potable water is not necessary. Nonpotable water is not of drinking water quality but may still be used for other purposes. Such uses include toilet flushing, irrigation, HVAC equipment, dust control, and cleaning streets and sidewalks. Regulation of treatment and reuse of nonpotable water is developed at the state level. Water is typically supplied through municipal systems, but as populations grow and water infrastructure ages, alternate sources of water become critical in efforts to create sustainable communities. When designing a water reuse strategy, consider on-site supply options for both indoor and outdoor water demands. This Pattern includes:

  •      Water Reuse Options
  •      What Is Best for the Site
  •      Case Studies


John Leys

Sherwood Design Engineers


Wastewater Treatment

Stormwater Transfer

Food Culture