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Revision as of 14:48, 22 August 2016

Harvested stormwater beneficial uses
Link to this table
Beneficial Uses X
Stormwater from rooftops only (rainwater) Stormwater
Health Criteria Level Expected level of effort Health Criteria Level Expected level of effort
Outdoor Sanitary sewer flushing Limited human exposure at point of use and limited exposure to pathogens upstream of point of use no treatment needed Limited human exposure at point of use and limited exposure to pathogens upstream of point of use minimal (pretreatment)
Irrigation – low exposure risk 1Limited human exposure at point of use and limited exposure to pathogens upstream of point of use. minimal (pretreatment) 1Limited human exposure at point of use and limited exposure to pathogens upstream of point of use. medium (pretreatment + disinfection OR pretreatment + treatment)
Irrigation – high exposure risk 1Limited human contact and controlled access at point of use. medium (pretreatment + disinfection OR pretreatment + treatment) 1Limited human contact and controlled access at point of use. high (pretreatment + treatment + disinfection)
Vehicle/building washing 1Limited human contact and controlled access at point of use. medium (pretreatment + disinfection OR pretreatment + treatment) 1Limited human contact and controlled access at point of use. medium (pretreatment + disinfection OR pretreatment + treatment)
Fire fighting 1Limited human contact and controlled access at point of use. minimal (pretreatment) 1Limited human contact and controlled access at point of use. m (pretreatment + disinfection OR pretreatment + treatment)
Water features (uncontrolled access) Limited human contact and controlled access at point of use. medium (pretreatment + disinfection OR pretreatment + treatment) Limited human contact and controlled access at point of use. medium (pretreatment + disinfection OR pretreatment + treatment)
Street cleaning/ dust control 1Limited human contact and controlled access at point of use. medium (pretreatment + disinfection OR pretreatment + treatment) 1Limited human contact and controlled access at point of use. medium (pretreatment + disinfection OR pretreatment + treatment)
Indoor Fire suppression Limited human contact and controlled access at point of use. medium (pretreatment + disinfection OR pretreatment + treatment) Limited human contact and controlled access at point of use. medium (pretreatment + disinfection OR pretreatment + treatment)
Cooling 1Limited human contact and controlled access at point of use. medium (pretreatment + disinfection OR pretreatment + treatment) 1Limited human contact and controlled access at point of use. high (pretreatment + treatment + disinfection)
Process /Boiler Water 1Limited human contact and controlled access at point of use. medium (pretreatment + disinfection OR pretreatment + treatment) 1Limited human contact and controlled access at point of use. high (pretreatment + treatment + disinfection)
Flushing 1Uncontrolled access at point of use medium (pretreatment + disinfection OR pretreatment + treatment) 1Uncontrolled access at point of use high (pretreatment + treatment + disinfection)
Washing Uncontrolled access at point of use medium (pretreatment + disinfection OR pretreatment + treatment) 1Uncontrolled access at point of use high (pretreatment + treatment + disinfection)
Drinking water Drinking water standards drinking water standards Drinking water standards drinking water standards

1A level of treatment that may be required depending on context

Note: In practice, all indoor non potable uses are typically treated to water quality requirements in code and currently require disinfection.