Perth
22.2 Groundwater allocation announcements – urban water system
Supporting information
This line item volume (151,005 ML) represents the total water allocation for groundwater supply to the urban water system in the Perth region during the 2012–13 year.
The annual allocation for urban supply for each groundwater management area for the 2012–13 year is given in the following table.
Groundwater source |
Allocation (ML) |
Cockburn |
17,550 |
| Gingin |
1,900 |
Gnangara |
14,250 |
Gwelup |
6,600 |
Jandakot |
4,350 |
Mirrabooka |
9,050 |
| Murray |
4,000 |
Perth |
41,320 |
| Rockingham |
1,000 |
| Serpentine |
16,625 |
| Stakehill |
10,330 |
| Swan |
21,680 |
Wanneroo |
2,350 |
Total |
151,005 |
Quantification approach
Data source
Provided by
Method
The Water Corporation manages the urban water system, which is subject to licence agreements for extraction of water from the bore fields within the groundwater management areas. One of the conditions of the licence agreement is that the maximum amount of extraction for each year is announced by the Minister for Water on an annual basis. The announced allocation is made after a review by the Department of Water of aquifer levels in the Perth region in October of the reporting year.
The total groundwater allocation announcement is assumed to be equal to 100% of the annual entitlement.
Assumptions, limitations, caveats and approximations
Uncertainty information
There is no uncertainty associated with this value.