Environment Protection Authority v Caltex Refining Co Pty Ltd

The appellant, the Environment Protection Authority, brought proceedings against the respondent, Caltex Refining Co Pty Ltd, in the High Court of Australia. The dispute concerned the interpretation and application of provisions within the *Clean Waters Act* concerning the pollution of waters.

The central legal issues before the Court were the interpretation of section 16 of the *Clean Waters Act*, which prohibited the pollution of waters, and the effect of section 16(6), which provided an exception for persons holding a licence and not contravening its conditions. The Court was also required to consider section 18, which dealt with the transfer of licences when a person becomes the occupier of premises previously licensed.

The Court's reasoning focused on the statutory language of the *Clean Waters Act*. It was noted that section 16(1) created a general prohibition against polluting waters, with exceptions provided in subsequent subsections. Section 16(6) was interpreted as a defence to the offence of pollution, requiring the accused to demonstrate they held a valid licence and had complied with its terms. Section 18 was understood to facilitate the continuation of licensed activities during a change of occupancy, by allowing the incoming occupier to benefit from an existing licence. The Court acknowledged that while the *Clean Waters Act* had been amended and offences were now dealt with under the *Environmental Offences and Penalties Act*, the substantive content of the offence and the relevant statutory provisions remained crucial for determining the appeal.