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; however, it is in the early stages of development. Consequently, the volume of water within the underlying aquifers cannot yet be determined and is not presented in the Statement of Water Assets and Water Liabilities.