Harvested stormwater beneficial uses
Link to this table
| Beneficial Uses | Harvested Water | ||||
|---|---|---|---|---|---|
| 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.