Arnold and Ors v Minister Administering the Water Management Act 2000 & Ors

The applicants, Arnold and others, sought judicial review of decisions made by the Minister Administering the Water Management Act 2000 (NSW) and the Minister for Planning. The dispute concerned the validity of approvals granted under the *Water Management Act 2000* (NSW) and the *Environmental Planning and Assessment Act 1979* (NSW) for a proposed development. The matter was heard by the High Court of Australia.

The central legal issues before the High Court were whether the Minister Administering the *Water Management Act 2000* had properly exercised the power to grant an approval under section 91 of that Act, and whether the Minister for Planning had validly granted development consent under section 77(3)(a) of the *Environmental Planning and Assessment Act 1979*. Specifically, the applicants contended that the approvals were invalid due to a failure to comply with statutory requirements concerning the consideration of certain matters and the proper exercise of discretionary powers.

The High Court considered the scope of the Ministers' powers and the statutory obligations imposed upon them. It analysed the relevant provisions of both Acts, focusing on the procedural and substantive requirements for granting approvals and development consent. The Court examined the evidence before the Ministers and the material they were required to consider, ultimately determining whether the decisions were affected by jurisdictional error. The principles of administrative law concerning the proper exercise of statutory power and the avoidance of fettering discretion were central to the Court's reasoning.

The High Court dismissed the application for judicial review, finding that the Ministers had not erred in law in granting the approvals.