2.2 Underlying aquifers
The volume of water within the underlying aquifers is difficult to quantify accurately. Minimum pressure heads have not been established for the Leederville and Yarragadee aquifers. This work is being carried out by the Department of Water, but is currently only in an early stage of development. Therefore, the volume of water within the underlying aquifers cannot yet be determined and thus is not presented in the Statement of water assets and water liabilities.