Sydney Water Act 1994

If an authorised person reasonably suspects that a water restriction offence is being committed on any land (including any land used for residential purposes), the authorised person may—

enter the land for the purposes of investigating the offence, and

take photographs in connection with the investigation.

The power conferred by this section to enter any land may not be exercised unless the authorised person—

exercises the power at a reasonable time, and

produces, if requested to do so by the occupier of the land, the authorised person’s identification as an authorised person.

An authorised person may not, in exercising the power to enter land—

enter any dwelling or enclosed structure on the land, or

use any force, or

remain on the land for a longer period than is reasonably necessary in the circumstances.