Minister for Public Works (NSW) v Peisley

The Minister for Public Works (NSW) appealed to the High Court of Australia against a decision of the Supreme Court of New South Wales. The dispute concerned the interpretation of section 55 of the Water Act 1912 (NSW), which governs the levying and appeal of rates by drainage trusts. Specifically, the appeal arose after a Police Magistrate reduced the rates imposed by the Tuckean Swamp Drainage Trust on certain landowners, but then refused to increase the rates on other landowners to compensate for the reduction, as purportedly required by the Act.

The central legal issue before the High Court was whether, under section 55(4) of the Water Act 1912, a Police Magistrate who reduces the amount of rates appealed by an occupier is obliged to increase the rates of other occupiers within the drainage district to ensure the total amount of rates collected by the trust remains undiminished. This required the Court to determine the scope of the Magistrate's discretion in apportioning any necessary increase among the remaining occupiers.

The High Court, by a majority (Knox C.J. and Isaacs J., with Gavan Duffy J. concurring with doubt), held that section 55(4) imposes an imperative duty on the Police Magistrate. The Court applied its previous decision in *Grahamstown and Campvale Swamps Drainage Trust v. Windeyer*, finding that the Magistrate must increase the rates of other occupiers to compensate for any reduction made to an appellant's rates, thereby ensuring the total sum to be raised by the trust is not diminished. The Magistrate's discretion lies only in how to justly apportion this increase among the other occupiers.

Consequently, the High Court allowed the appeal, discharged the order of the Supreme Court which had discharged the rule nisi for mandamus, and made the order nisi absolute, directing the Police Magistrate to increase the rates on the lands of the other occupiers.