17Rights to prevent pollution preserved

17 Rights to prevent pollution preserved (1) Subject to subsection (2), nothing in this Act affects a right that a person has under a law in force in the Territory to restrict or prevent, or to obtain damages in respect of, the pollution of water. (2) In an action to restrict or prevent the pollution of water, it is a defence if it is proved that the pollution was authorised by a licence granted under section 63 or 74.