Local Board of Health of Perth v Maley

The High Court of Australia considered an appeal concerning the construction of a sewer by the Local Board of Health of Perth against Mr. Maley. The dispute arose from the Board's actions in constructing the sewer, which Mr. Maley alleged constituted a trespass.

The central legal issue before the Court was the interpretation of section 158 of the *Health Act 1898* (WA). Specifically, the Court had to determine what constituted "necessary" in the context of the Board's power to construct sewers, and whether the Board's actions were justified under this provision, thereby potentially negating a claim for trespass.

The Court reasoned that the word "necessary" in section 158 did not imply an absolute or indispensable requirement, but rather a reasonable necessity. It was held that the Board was entitled to construct the sewer if it was reasonably required for the purposes of public health, even if alternative methods of drainage might have been available. The Court applied the principle that statutory powers must be exercised reasonably and for the purpose for which they were granted. The appeal was dismissed.