Difference between revisions of "Harvested stormwater beneficial uses"
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Latest revision as of 20:00, 3 August 2022
Harvested stormwater beneficial uses
Link to this table
| Beneficial Uses | 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 | Limited human exposure at point of use and limited exposure to pathogens upstream of point of use. | Minimal (pretreatment)1 | Limited human exposure at point of use and limited exposure to pathogens upstream of point of use.1 | Medium (pretreatment + disinfection OR pretreatment + treatment) | |
| Irrigation – high exposure risk | Limited human contact and controlled access at point of use.1 | Medium (pretreatment + disinfection OR pretreatment + treatment) | Limited human contact and controlled access at point of use.1 | High (pretreatment + treatment + disinfection) | |
| Vehicle/building washing | Limited human contact and controlled access at point of use.1 | Medium (pretreatment + disinfection OR pretreatment + treatment) | Limited human contact and controlled access at point of use.1 | Medium (pretreatment + disinfection OR pretreatment + treatment) | |
| Fire fighting | Limited human contact and controlled access at point of use.1 | Minimal (pretreatment) | Limited human contact and controlled access at point of use.1 | Medium (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 | Limited human contact and controlled access at point of use.1 | Medium (pretreatment + disinfection OR pretreatment + treatment) | Limited human contact and controlled access at point of use.1 | 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 | Limited human contact and controlled access at point of use.1 | Medium (pretreatment + disinfection OR pretreatment + treatment) | Limited human contact and controlled access at point of use.1 | High (pretreatment + treatment + disinfection) | |
| Process /Boiler Water | Limited human contact and controlled access at point of use.1 | Medium (pretreatment + disinfection OR pretreatment + treatment) | Limited human contact and controlled access at point of use.1 | High (pretreatment + treatment + disinfection) | |
| Flushing | Uncontrolled access at point of use1 | Medium (pretreatment + disinfection OR pretreatment + treatment) | Uncontrolled access at point of use1 | High (pretreatment + treatment + disinfection) | |
| Washing | Uncontrolled access at point of use | Medium (pretreatment + disinfection OR pretreatment + treatment) | Uncontrolled access at point of use1 | High (pretreatment + treatment + disinfection) | |
| Drinking water | Drinking water standards | Drinking water standards | Drinking water standards | Drinking water standards | |
1A higher 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.
This page was last edited on 3 August 2022, at 20:00.